diff --git a/modules/angular2/src/web_workers/shared/client_message_broker.ts b/modules/angular2/src/web_workers/shared/client_message_broker.ts
index 90702b603b..c3d53126cf 100644
--- a/modules/angular2/src/web_workers/shared/client_message_broker.ts
+++ b/modules/angular2/src/web_workers/shared/client_message_broker.ts
@@ -12,6 +12,7 @@ import {ListWrapper, StringMapWrapper, MapWrapper} from "angular2/src/core/facad
 import {Serializer} from "angular2/src/web_workers/shared/serializer";
 import {Injectable} from "angular2/di";
 import {Type, StringWrapper} from "angular2/src/core/facade/lang";
+export {Type} from "angular2/src/core/facade/lang";
 
 @Injectable()
 export class ClientMessageBrokerFactory {
@@ -29,7 +30,8 @@ export class ClientMessageBroker {
   constructor(messageBus: MessageBus, protected _serializer: Serializer, public channel) {
     this._sink = messageBus.to(channel);
     var source = messageBus.from(channel);
-    ObservableWrapper.subscribe(source, (message) => this._handleMessage(message));
+    ObservableWrapper.subscribe(source,
+                                (message: StringMap<string, any>) => this._handleMessage(message));
   }
 
   private _generateMessageId(name: string): string {
@@ -43,7 +45,7 @@ export class ClientMessageBroker {
     return id;
   }
 
-  runOnUiThread(args: UiArguments, returnType: Type): Promise<any> {
+  runOnService(args: UiArguments, returnType: Type): Promise<any> {
     var fnArgs = [];
     if (isPresent(args.args)) {
       ListWrapper.forEach(args.args, (argument) => {
@@ -128,7 +130,7 @@ class MessageData {
 }
 
 export class FnArg {
-  constructor(public value, public type) {}
+  constructor(public value, public type: Type) {}
 }
 
 export class UiArguments {
diff --git a/modules/angular2/src/web_workers/ui/application.dart b/modules/angular2/src/web_workers/ui/application.dart
index 9fb758d9b2..be70e2485e 100644
--- a/modules/angular2/src/web_workers/ui/application.dart
+++ b/modules/angular2/src/web_workers/ui/application.dart
@@ -5,7 +5,7 @@ import 'dart:async';
 import 'dart:core';
 import 'package:angular2/src/web_workers/shared/message_bus.dart'
     show MessageBus;
-import 'package:angular2/src/web_workers/ui/impl.dart' show bootstrapUICommon;
+import 'package:angular2/src/web_workers/ui/impl.dart' show bootstrapUICommon, WebWorkerApplication;
 import 'package:angular2/src/web_workers/shared/isolate_message_bus.dart';
 
 /**
@@ -14,26 +14,24 @@ import 'package:angular2/src/web_workers/shared/isolate_message_bus.dart';
  * You instantiate a WebWorker application by calling bootstrap with the URI of your worker's index script
  * Note: The WebWorker script must call bootstrapWebworker once it is set up to complete the bootstrapping process
  */
-Future<MessageBus> bootstrap(String uri) {
-  return spawnWebWorker(Uri.parse(uri)).then((bus) {
-    bootstrapUICommon(bus);
-    return bus;
-  });
+Future<IsolateInstance> bootstrap(String uri) async {
+  var instance = await spawnWebWorker(Uri.parse(uri));
+  instance.app = bootstrapUICommon(instance.bus);
+  return instance;
 }
 
 /**
  * To be called from the main thread to spawn and communicate with the worker thread
  */
-Future<MessageBus> spawnWebWorker(Uri uri) {
+Future<IsolateInstance> spawnWebWorker(Uri uri) async {
   var receivePort = new ReceivePort();
   var isolateEndSendPort = receivePort.sendPort;
-  return Isolate.spawnUri(uri, const [], isolateEndSendPort).then((_) {
-    var source = new UIMessageBusSource(receivePort);
-    return source.sink.then((sendPort) {
-      var sink = new IsolateMessageBusSink(sendPort);
-      return new IsolateMessageBus(sink, source);
-    });
-  });
+  var isolate = await Isolate.spawnUri(uri, const [], isolateEndSendPort);
+  var source = new UIMessageBusSource(receivePort);
+  var sendPort = await source.sink;
+  var sink = new IsolateMessageBusSink(sendPort);
+  var bus = new IsolateMessageBus(sink, source);
+  return new IsolateInstance(null, isolate, bus);
 }
 
 class UIMessageBusSource extends IsolateMessageBusSource {
@@ -43,3 +41,15 @@ class UIMessageBusSource extends IsolateMessageBusSource {
         return message is SendPort;
       });
 }
+
+/**
+ * Wrapper class that exposes the {@link WebWorkerApplication}
+ * Isolate instance and underyling {@link MessageBus} for lower level message passing.
+ */
+class IsolateInstance {
+  WebWorkerApplication app;
+  final Isolate isolate;
+  final MessageBus bus;
+
+  IsolateInstance(this.app, this.isolate, this.bus);
+}
diff --git a/modules/angular2/src/web_workers/ui/application.ts b/modules/angular2/src/web_workers/ui/application.ts
index d350adbd03..9f5014b0d7 100644
--- a/modules/angular2/src/web_workers/ui/application.ts
+++ b/modules/angular2/src/web_workers/ui/application.ts
@@ -4,8 +4,9 @@ import {
   PostMessageBusSource
 } from 'angular2/src/web_workers/shared/post_message_bus';
 import {MessageBus} from 'angular2/src/web_workers/shared/message_bus';
-import {BaseException} from "angular2/src/core/facade/lang";
-import {bootstrapUICommon} from "angular2/src/web_workers/ui/impl";
+import {BaseException} from 'angular2/src/core/facade/lang';
+import {bootstrapUICommon, WebWorkerApplication} from 'angular2/src/web_workers/ui/impl';
+export {WebWorkerApplication} from 'angular2/src/web_workers/ui/impl';
 export * from 'angular2/src/web_workers/shared/message_bus';
 
 /**
@@ -16,15 +17,24 @@ export * from 'angular2/src/web_workers/shared/message_bus';
  * Note: The WebWorker script must call bootstrapWebworker once it is set up to complete the
  * bootstrapping process
  */
-export function bootstrap(uri: string): MessageBus {
-  var messageBus = spawnWebWorker(uri);
-  bootstrapUICommon(messageBus);
-  return messageBus;
+export function bootstrap(uri: string): WebWorkerInstance {
+  var instance = spawnWebWorker(uri);
+  instance.app = bootstrapUICommon(instance.bus);
+  return instance;
 }
 
-export function spawnWebWorker(uri: string): MessageBus {
+export function spawnWebWorker(uri: string): WebWorkerInstance {
   var webWorker: Worker = new Worker(uri);
   var sink = new PostMessageBusSink(webWorker);
   var source = new PostMessageBusSource(webWorker);
-  return new PostMessageBus(sink, source);
+  var bus = new PostMessageBus(sink, source);
+  return new WebWorkerInstance(null, webWorker, bus);
+}
+
+/**
+ * Wrapper class that exposes the {@link WebWorkerApplication}
+ * Isolate instance and underyling {@link MessageBus} for lower level message passing.
+ */
+export class WebWorkerInstance {
+  constructor(public app: WebWorkerApplication, public worker: Worker, public bus: MessageBus) {}
 }
diff --git a/modules/angular2/src/web_workers/ui/di_bindings.ts b/modules/angular2/src/web_workers/ui/di_bindings.ts
index b22ea16bae..13d1a5fe59 100644
--- a/modules/angular2/src/web_workers/ui/di_bindings.ts
+++ b/modules/angular2/src/web_workers/ui/di_bindings.ts
@@ -2,7 +2,6 @@
 // There should be a way to refactor application so that this file is unnecessary. See #3277
 import {Injector, bind, Binding} from "angular2/di";
 import {Reflector, reflector} from 'angular2/src/core/reflection/reflection';
-import {ListWrapper} from 'angular2/src/core/facade/collection';
 import {
   Parser,
   Lexer,
@@ -61,13 +60,14 @@ import {
   RenderViewWithFragmentsStore
 } from 'angular2/src/web_workers/shared/render_view_with_fragments_store';
 import {AnchorBasedAppRootUrl} from 'angular2/src/core/services/anchor_based_app_root_url';
-import {WebWorkerMain} from 'angular2/src/web_workers/ui/impl';
+import {WebWorkerApplication} from 'angular2/src/web_workers/ui/impl';
 import {MessageBus} from 'angular2/src/web_workers/shared/message_bus';
 import {MessageBasedRenderCompiler} from 'angular2/src/web_workers/ui/render_compiler';
 import {MessageBasedRenderer} from 'angular2/src/web_workers/ui/renderer';
 import {MessageBasedXHRImpl} from 'angular2/src/web_workers/ui/xhr_impl';
 import {WebWorkerSetup} from 'angular2/src/web_workers/ui/setup';
 import {ServiceMessageBrokerFactory} from 'angular2/src/web_workers/shared/service_message_broker';
+import {ClientMessageBrokerFactory} from 'angular2/src/web_workers/shared/client_message_broker';
 
 var _rootInjector: Injector;
 
@@ -134,12 +134,13 @@ function _injectorBindings(): any[] {
     Testability,
     AnchorBasedAppRootUrl,
     bind(AppRootUrl).toAlias(AnchorBasedAppRootUrl),
-    WebWorkerMain,
+    WebWorkerApplication,
     WebWorkerSetup,
     MessageBasedRenderCompiler,
     MessageBasedXHRImpl,
     MessageBasedRenderer,
-    ServiceMessageBrokerFactory
+    ServiceMessageBrokerFactory,
+    ClientMessageBrokerFactory
   ];
 }
 
diff --git a/modules/angular2/src/web_workers/ui/impl.ts b/modules/angular2/src/web_workers/ui/impl.ts
index 9e45648112..e68c2a18f2 100644
--- a/modules/angular2/src/web_workers/ui/impl.ts
+++ b/modules/angular2/src/web_workers/ui/impl.ts
@@ -15,25 +15,43 @@ import {WebWorkerSetup} from 'angular2/src/web_workers/ui/setup';
 import {MessageBasedRenderCompiler} from 'angular2/src/web_workers/ui/render_compiler';
 import {MessageBasedRenderer} from 'angular2/src/web_workers/ui/renderer';
 import {MessageBasedXHRImpl} from 'angular2/src/web_workers/ui/xhr_impl';
+import {
+  ClientMessageBrokerFactory,
+  ClientMessageBroker,
+} from 'angular2/src/web_workers/shared/client_message_broker';
+import {
+  ServiceMessageBrokerFactory,
+  ServiceMessageBroker
+} from 'angular2/src/web_workers/shared/service_message_broker';
 
 /**
  * Creates a zone, sets up the DI bindings
  * And then creates a new WebWorkerMain object to handle messages from the worker
  */
-export function bootstrapUICommon(bus: MessageBus) {
+export function bootstrapUICommon(bus: MessageBus): WebWorkerApplication {
   BrowserDomAdapter.makeCurrent();
   var zone = createNgZone();
   wtfInit();
-  zone.run(() => {
+  return zone.run(() => {
     var injector = createInjector(zone, bus);
-    // necessary to kick off all the message based components
-    injector.get(WebWorkerMain);
+    injector.get(MessageBasedRenderCompiler).start();
+    injector.get(MessageBasedRenderer).start();
+    injector.get(MessageBasedXHRImpl).start();
+    injector.get(WebWorkerSetup).start();
+    return injector.get(WebWorkerApplication);
   });
 }
 
 @Injectable()
-export class WebWorkerMain {
-  constructor(public renderCompiler: MessageBasedRenderCompiler,
-              public renderer: MessageBasedRenderer, public xhr: MessageBasedXHRImpl,
-              public setup: WebWorkerSetup) {}
+export class WebWorkerApplication {
+  constructor(private _clientMessageBrokerFactory: ClientMessageBrokerFactory,
+              private _serviceMessageBrokerFactory: ServiceMessageBrokerFactory) {}
+
+  createClientMessageBroker(channel: string): ClientMessageBroker {
+    return this._clientMessageBrokerFactory.createMessageBroker(channel);
+  }
+
+  createServiceMessageBroker(channel: string): ServiceMessageBroker {
+    return this._serviceMessageBrokerFactory.createMessageBroker(channel);
+  }
 }
diff --git a/modules/angular2/src/web_workers/ui/render_compiler.ts b/modules/angular2/src/web_workers/ui/render_compiler.ts
index 1812c746ca..8ed6744d70 100644
--- a/modules/angular2/src/web_workers/ui/render_compiler.ts
+++ b/modules/angular2/src/web_workers/ui/render_compiler.ts
@@ -13,8 +13,11 @@ import {ServiceMessageBrokerFactory} from 'angular2/src/web_workers/shared/servi
 
 @Injectable()
 export class MessageBasedRenderCompiler {
-  constructor(brokerFactory: ServiceMessageBrokerFactory, private _renderCompiler: RenderCompiler) {
-    var broker = brokerFactory.createMessageBroker(RENDER_COMPILER_CHANNEL);
+  constructor(private _brokerFactory: ServiceMessageBrokerFactory,
+              private _renderCompiler: RenderCompiler) {}
+
+  start(): void {
+    var broker = this._brokerFactory.createMessageBroker(RENDER_COMPILER_CHANNEL);
     broker.registerMethod("compileHost", [RenderDirectiveMetadata],
                           bind(this._renderCompiler.compileHost, this._renderCompiler),
                           ProtoViewDto);
diff --git a/modules/angular2/src/web_workers/ui/renderer.ts b/modules/angular2/src/web_workers/ui/renderer.ts
index 6ad781f4f9..219e260ef7 100644
--- a/modules/angular2/src/web_workers/ui/renderer.ts
+++ b/modules/angular2/src/web_workers/ui/renderer.ts
@@ -19,11 +19,13 @@ import {ServiceMessageBrokerFactory} from 'angular2/src/web_workers/shared/servi
 
 @Injectable()
 export class MessageBasedRenderer {
-  constructor(brokerFactory: ServiceMessageBrokerFactory, private _bus: MessageBus,
+  constructor(private _brokerFactory: ServiceMessageBrokerFactory, private _bus: MessageBus,
               private _serializer: Serializer,
               private _renderViewWithFragmentsStore: RenderViewWithFragmentsStore,
-              private _renderer: Renderer) {
-    var broker = brokerFactory.createMessageBroker(RENDERER_CHANNEL);
+              private _renderer: Renderer) {}
+
+  start(): void {
+    var broker = this._brokerFactory.createMessageBroker(RENDERER_CHANNEL);
     broker.registerMethod("createRootHostView",
                           [RenderProtoViewRef, PRIMITIVE, PRIMITIVE, PRIMITIVE],
                           bind(this._createRootHostView, this));
diff --git a/modules/angular2/src/web_workers/ui/setup.ts b/modules/angular2/src/web_workers/ui/setup.ts
index 9e06877f89..c08a78df38 100644
--- a/modules/angular2/src/web_workers/ui/setup.ts
+++ b/modules/angular2/src/web_workers/ui/setup.ts
@@ -7,14 +7,19 @@ import {StringWrapper} from 'angular2/src/core/facade/lang';
 
 @Injectable()
 export class WebWorkerSetup {
-  constructor(bus: MessageBus, anchorBasedAppRootUrl: AnchorBasedAppRootUrl) {
-    var rootUrl = anchorBasedAppRootUrl.value;
-    var sink = bus.to(SETUP_CHANNEL);
-    var source = bus.from(SETUP_CHANNEL);
+  rootUrl: string;
+
+  constructor(private _bus: MessageBus, anchorBasedAppRootUrl: AnchorBasedAppRootUrl) {
+    this.rootUrl = anchorBasedAppRootUrl.value;
+  }
+
+  start(): void {
+    var sink = this._bus.to(SETUP_CHANNEL);
+    var source = this._bus.from(SETUP_CHANNEL);
 
     ObservableWrapper.subscribe(source, (message: string) => {
       if (StringWrapper.equals(message, "ready")) {
-        ObservableWrapper.callNext(sink, {"rootUrl": rootUrl});
+        ObservableWrapper.callNext(sink, {"rootUrl": this.rootUrl});
       }
     });
   }
diff --git a/modules/angular2/src/web_workers/ui/xhr_impl.ts b/modules/angular2/src/web_workers/ui/xhr_impl.ts
index 3d92ca9c14..a554fe43ff 100644
--- a/modules/angular2/src/web_workers/ui/xhr_impl.ts
+++ b/modules/angular2/src/web_workers/ui/xhr_impl.ts
@@ -7,8 +7,10 @@ import {bind} from './bind';
 
 @Injectable()
 export class MessageBasedXHRImpl {
-  constructor(brokerFactory: ServiceMessageBrokerFactory, private _xhr: XHR) {
-    var broker = brokerFactory.createMessageBroker(XHR_CHANNEL);
+  constructor(private _brokerFactory: ServiceMessageBrokerFactory, private _xhr: XHR) {}
+
+  start(): void {
+    var broker = this._brokerFactory.createMessageBroker(XHR_CHANNEL);
     broker.registerMethod("get", [PRIMITIVE], bind(this._xhr.get, this._xhr), PRIMITIVE);
   }
 }
diff --git a/modules/angular2/src/web_workers/worker/renderer.ts b/modules/angular2/src/web_workers/worker/renderer.ts
index a2217883fe..8917c9157d 100644
--- a/modules/angular2/src/web_workers/worker/renderer.ts
+++ b/modules/angular2/src/web_workers/worker/renderer.ts
@@ -44,7 +44,7 @@ export class WebWorkerCompiler implements RenderCompiler {
   compileHost(directiveMetadata: RenderDirectiveMetadata): Promise<ProtoViewDto> {
     var fnArgs: FnArg[] = [new FnArg(directiveMetadata, RenderDirectiveMetadata)];
     var args: UiArguments = new UiArguments("compileHost", fnArgs);
-    return this._messageBroker.runOnUiThread(args, ProtoViewDto);
+    return this._messageBroker.runOnService(args, ProtoViewDto);
   }
 
   /**
@@ -55,7 +55,7 @@ export class WebWorkerCompiler implements RenderCompiler {
   compile(view: ViewDefinition): Promise<ProtoViewDto> {
     var fnArgs: FnArg[] = [new FnArg(view, ViewDefinition)];
     var args: UiArguments = new UiArguments("compile", fnArgs);
-    return this._messageBroker.runOnUiThread(args, ProtoViewDto);
+    return this._messageBroker.runOnService(args, ProtoViewDto);
   }
 
   /**
@@ -71,7 +71,7 @@ export class WebWorkerCompiler implements RenderCompiler {
       protoViewRefs: Array<RenderProtoViewRef | any[]>): Promise<RenderProtoViewMergeMapping> {
     var fnArgs: FnArg[] = [new FnArg(protoViewRefs, RenderProtoViewRef)];
     var args: UiArguments = new UiArguments("mergeProtoViewsRecursively", fnArgs);
-    return this._messageBroker.runOnUiThread(args, RenderProtoViewMergeMapping);
+    return this._messageBroker.runOnService(args, RenderProtoViewMergeMapping);
   }
 }
 
@@ -126,7 +126,7 @@ export class WebWorkerRenderer implements Renderer {
     fnArgs.push(new FnArg(startIndex, null));
 
     var args = new UiArguments(method, fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
 
     return renderViewWithFragments;
   }
@@ -137,7 +137,7 @@ export class WebWorkerRenderer implements Renderer {
   destroyView(viewRef: RenderViewRef) {
     var fnArgs = [new FnArg(viewRef, RenderViewRef)];
     var args = new UiArguments("destroyView", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
     this._renderViewStore.remove(viewRef);
   }
 
@@ -151,7 +151,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(fragmentRef, RenderFragmentRef)
     ];
     var args = new UiArguments("attachFragmentAfterFragment", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -161,7 +161,7 @@ export class WebWorkerRenderer implements Renderer {
     var fnArgs =
         [new FnArg(elementRef, WebWorkerElementRef), new FnArg(fragmentRef, RenderFragmentRef)];
     var args = new UiArguments("attachFragmentAfterElement", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -170,7 +170,7 @@ export class WebWorkerRenderer implements Renderer {
   detachFragment(fragmentRef: RenderFragmentRef) {
     var fnArgs = [new FnArg(fragmentRef, RenderFragmentRef)];
     var args = new UiArguments("detachFragment", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -180,7 +180,7 @@ export class WebWorkerRenderer implements Renderer {
   hydrateView(viewRef: RenderViewRef) {
     var fnArgs = [new FnArg(viewRef, RenderViewRef)];
     var args = new UiArguments("hydrateView", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -190,7 +190,7 @@ export class WebWorkerRenderer implements Renderer {
   dehydrateView(viewRef: RenderViewRef) {
     var fnArgs = [new FnArg(viewRef, RenderViewRef)];
     var args = new UiArguments("dehydrateView", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -209,7 +209,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(propertyValue, null)
     ];
     var args = new UiArguments("setElementProperty", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -222,7 +222,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(attributeValue, null)
     ];
     var args = new UiArguments("setElementAttribute", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -235,7 +235,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(isAdd, null)
     ];
     var args = new UiArguments("setElementClass", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -248,7 +248,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(styleValue, null)
     ];
     var args = new UiArguments("setElementStyle", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -262,7 +262,7 @@ export class WebWorkerRenderer implements Renderer {
       new FnArg(args, null)
     ];
     var uiArgs = new UiArguments("invokeElementMethod", fnArgs);
-    this._messageBroker.runOnUiThread(uiArgs, null);
+    this._messageBroker.runOnService(uiArgs, null);
   }
 
   /**
@@ -272,7 +272,7 @@ export class WebWorkerRenderer implements Renderer {
     var fnArgs =
         [new FnArg(viewRef, RenderViewRef), new FnArg(textNodeIndex, null), new FnArg(text, null)];
     var args = new UiArguments("setText", fnArgs);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 
   /**
@@ -282,6 +282,6 @@ export class WebWorkerRenderer implements Renderer {
     var fnArgs = [new FnArg(viewRef, RenderViewRef)];
     var args = new UiArguments("setEventDispatcher", fnArgs);
     this._eventDispatcher.registerEventDispatcher(viewRef, dispatcher);
-    this._messageBroker.runOnUiThread(args, null);
+    this._messageBroker.runOnService(args, null);
   }
 }
diff --git a/modules/angular2/src/web_workers/worker/xhr_impl.ts b/modules/angular2/src/web_workers/worker/xhr_impl.ts
index ae8c09c98c..6978f3938f 100644
--- a/modules/angular2/src/web_workers/worker/xhr_impl.ts
+++ b/modules/angular2/src/web_workers/worker/xhr_impl.ts
@@ -25,6 +25,6 @@ export class WebWorkerXHRImpl extends XHR {
   get(url: string): Promise<string> {
     var fnArgs: FnArg[] = [new FnArg(url, null)];
     var args: UiArguments = new UiArguments("get", fnArgs);
-    return this._messageBroker.runOnUiThread(args, String);
+    return this._messageBroker.runOnService(args, String);
   }
 }
diff --git a/modules/angular2/test/web_workers/worker/renderer_integration_spec.ts b/modules/angular2/test/web_workers/worker/renderer_integration_spec.ts
index f14c35f5e8..826c9b5ea5 100644
--- a/modules/angular2/test/web_workers/worker/renderer_integration_spec.ts
+++ b/modules/angular2/test/web_workers/worker/renderer_integration_spec.ts
@@ -43,7 +43,7 @@ import {
   DomProtoView
 } from 'angular2/src/core/render/dom/view/proto_view';
 import {someComponent} from '../../core/render/dom/dom_renderer_integration_spec';
-import {WebWorkerMain} from 'angular2/src/web_workers/ui/impl';
+import {WebWorkerApplication} from 'angular2/src/web_workers/ui/impl';
 import {MessageBasedRenderCompiler} from 'angular2/src/web_workers/ui/render_compiler';
 import {MessageBasedRenderer} from 'angular2/src/web_workers/ui/renderer';
 import {createPairedMessageBuses} from '../shared/web_worker_test_util';
@@ -64,9 +64,11 @@ export function main() {
     // set up the ui side
     var uiMessageBrokerFactory = new ServiceMessageBrokerFactory(uiMessageBus, uiSerializer);
     var renderCompiler = new MessageBasedRenderCompiler(uiMessageBrokerFactory, tb.compiler);
+    renderCompiler.start();
     var renderer = new MessageBasedRenderer(uiMessageBrokerFactory, uiMessageBus, uiSerializer,
                                             uiRenderViewStore, tb.renderer);
-    new WebWorkerMain(renderCompiler, renderer, null, null);
+    renderer.start();
+    new WebWorkerApplication(null, null);
 
     return webWorkerBrokerFactory;
   }
diff --git a/modules/angular2/test/web_workers/worker/xhr_impl_spec.ts b/modules/angular2/test/web_workers/worker/xhr_impl_spec.ts
index e5e2464698..cfcbf47812 100644
--- a/modules/angular2/test/web_workers/worker/xhr_impl_spec.ts
+++ b/modules/angular2/test/web_workers/worker/xhr_impl_spec.ts
@@ -26,7 +26,7 @@ export function main() {
          const RESPONSE = "Example response text";
 
          var messageBroker: any = new SpyMessageBroker();
-         messageBroker.spy("runOnUiThread")
+         messageBroker.spy("runOnService")
              .andCallFake((args: UiArguments, returnType: Type) => {
                expect(args.method).toEqual("get");
                expect(args.args.length).toEqual(1);
diff --git a/modules/angular2/web_worker/ui.ts b/modules/angular2/web_worker/ui.ts
index 94b2d3dd11..3cb30cd1bd 100644
--- a/modules/angular2/web_worker/ui.ts
+++ b/modules/angular2/web_worker/ui.ts
@@ -1 +1,4 @@
 export * from "../src/web_workers/ui/application";
+export * from "../src/web_workers/shared/client_message_broker";
+export * from "../src/web_workers/shared/service_message_broker";
+export * from "../src/web_workers/shared/serializer";
diff --git a/modules/angular2/web_worker/worker.ts b/modules/angular2/web_worker/worker.ts
index cfc4c552de..76dfebf4c8 100644
--- a/modules/angular2/web_worker/worker.ts
+++ b/modules/angular2/web_worker/worker.ts
@@ -7,3 +7,6 @@ export * from '../forms';
 export * from '../render';
 export * from '../profile';
 export * from '../src/web_workers/worker/application';
+export * from "../src/web_workers/shared/client_message_broker";
+export * from "../src/web_workers/shared/service_message_broker";
+export * from "../src/web_workers/shared/serializer";
diff --git a/modules/examples/e2e_test/message_broker/message_broker_spec.ts b/modules/examples/e2e_test/message_broker/message_broker_spec.ts
deleted file mode 100644
index 331ad3dc13..0000000000
--- a/modules/examples/e2e_test/message_broker/message_broker_spec.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import {verifyNoBrowserErrors} from 'angular2/src/test_lib/e2e_util';
-import {PromiseWrapper} from "angular2/src/core/facade/async";
-
-var URL = 'examples/src/message_broker/index.html';
-
-describe('message bus', function() {
-
-  afterEach(verifyNoBrowserErrors);
-
-  it('should receive a response from the worker', function() {
-    browser.get(URL);
-    browser.sleep(5000);
-
-    var VALUE = "hi there";
-    var input = element.all(by.css("#echo_input")).first();
-    input.sendKeys(VALUE);
-    clickComponentButton("body", "#send_echo");
-    browser.wait(protractor.until.elementLocated(protractor.By.css("#echo_result .response")),
-                 5000);
-    expect(getComponentText("#echo_result", ".response")).toEqual(VALUE);
-  });
-});
-
-describe('message broker', function() {
-  afterEach(verifyNoBrowserErrors);
-
-
-  it('should be able to run tasks on the UI thread after init', () => {
-    var VALUE = '5';
-
-    browser.get(URL);
-    browser.wait(protractor.until.elementLocated(protractor.By.css("#ui_result .result")), 5000);
-    expect(getComponentText("#ui_result", ".result")).toEqual(VALUE);
-  });
-});
-
-function getComponentText(selector, innerSelector) {
-  return browser.executeScript('return document.querySelector("' + selector + '").querySelector("' +
-                               innerSelector + '").textContent');
-}
-
-function clickComponentButton(selector, innerSelector) {
-  return browser.executeScript('return document.querySelector("' + selector + '").querySelector("' +
-                               innerSelector + '").click()');
-}
diff --git a/modules/examples/e2e_test/message_broker/message_broker_spec.dart b/modules/examples/e2e_test/web_workers/message_broker/message_broker_spec.dart
similarity index 100%
rename from modules/examples/e2e_test/message_broker/message_broker_spec.dart
rename to modules/examples/e2e_test/web_workers/message_broker/message_broker_spec.dart
diff --git a/modules/examples/e2e_test/web_workers/message_broker/message_broker_spec.ts b/modules/examples/e2e_test/web_workers/message_broker/message_broker_spec.ts
new file mode 100644
index 0000000000..643eeccba8
--- /dev/null
+++ b/modules/examples/e2e_test/web_workers/message_broker/message_broker_spec.ts
@@ -0,0 +1,32 @@
+import {verifyNoBrowserErrors} from "angular2/src/test_lib/e2e_util";
+import {PromiseWrapper} from "angular2/src/core/facade/async";
+
+var URL = "examples/src/web_workers/message_broker/index.html";
+
+describe("MessageBroker", function() {
+
+  afterEach(verifyNoBrowserErrors);
+
+  it("should bootstrap", () => {
+    browser.get(URL);
+    waitForBootstrap();
+    expect(element(by.css("app h1")).getText()).toEqual("WebWorker MessageBroker Test");
+  });
+
+  it("should echo messages", () => {
+    const VALUE = "Hi There";
+    browser.get(URL);
+    waitForBootstrap();
+
+    var input = element.all(by.css("#echo_input")).first();
+    input.sendKeys(VALUE);
+    element(by.css("#send_echo")).click();
+    var area = element(by.css("#echo_result"));
+    browser.wait(protractor.until.elementTextIs(area, VALUE), 5000);
+    expect(area.getText()).toEqual(VALUE);
+  });
+});
+
+function waitForBootstrap(): void {
+  browser.wait(protractor.until.elementLocated(by.css("app h1")), 5000);
+}
diff --git a/modules/examples/src/message_broker/background_index.dart b/modules/examples/src/message_broker/background_index.dart
deleted file mode 100644
index e3871fd701..0000000000
--- a/modules/examples/src/message_broker/background_index.dart
+++ /dev/null
@@ -1,29 +0,0 @@
-library angular2.examples.message_broker.background_index;
-
-import "package:angular2/src/web_workers/shared/client_message_broker.dart"
-    show ClientMessageBroker, UiArguments;
-import "package:angular2/src/web_workers/shared/serializer.dart"
-    show Serializer;
-import "package:angular2/src/web_workers/shared/isolate_message_bus.dart";
-import "package:angular2/src/web_workers/worker/application.dart"
-    show WebWorkerMessageBusSink;
-import "package:angular2/src/core/facade/async.dart";
-import "dart:isolate";
-
-main(List<String> args, SendPort replyTo) {
-  ReceivePort rPort = new ReceivePort();
-  var sink = new WebWorkerMessageBusSink(replyTo, rPort);
-  var source = new IsolateMessageBusSource(rPort);
-  IsolateMessageBus bus = new IsolateMessageBus(sink, source);
-
-  ObservableWrapper.subscribe(bus.from("echo"), (value) {
-    ObservableWrapper.callNext(bus.to("echo"), value);
-  });
-
-  ClientMessageBroker broker =
-      new ClientMessageBroker(bus, new Serializer(null, null, null), "test");
-  var args = new UiArguments("tester");
-  broker.runOnUiThread(args, String).then((data) {
-    ObservableWrapper.callNext(bus.to("result"), data);
-  });
-}
diff --git a/modules/examples/src/message_broker/background_index.ts b/modules/examples/src/message_broker/background_index.ts
deleted file mode 100644
index 77442449d8..0000000000
--- a/modules/examples/src/message_broker/background_index.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import {
-  PostMessageBus,
-  PostMessageBusSink,
-  PostMessageBusSource
-} from 'angular2/src/web_workers/shared/post_message_bus';
-import {ObservableWrapper} from 'angular2/src/core/facade/async';
-import {
-  ClientMessageBroker,
-  UiArguments
-} from "angular2/src/web_workers/shared/client_message_broker";
-import {Serializer} from "angular2/src/web_workers/shared/serializer";
-
-interface PostMessageInterface {
-  (message: any, transferrables?:[ArrayBuffer]): void;
-}
-var _postMessage: PostMessageInterface = <any>postMessage;
-
-export function main() {
-  var sink = new PostMessageBusSink({
-    postMessage:
-        (message: any, transferrables?:[ArrayBuffer]) => { _postMessage(message, transferrables); }
-  });
-  var source = new PostMessageBusSource();
-  var bus = new PostMessageBus(sink, source);
-
-  ObservableWrapper.subscribe(bus.from("echo"),
-                              (value) => { ObservableWrapper.callNext(bus.to("echo"), value); });
-
-  var broker = new ClientMessageBroker(bus, new Serializer(null, null, null), "test");
-  var args = new UiArguments("tester");
-  broker.runOnUiThread(args, String)
-      .then((data: string) => { ObservableWrapper.callNext(bus.to("result"), data); });
-}
diff --git a/modules/examples/src/message_broker/index.dart b/modules/examples/src/message_broker/index.dart
deleted file mode 100644
index 8ea97d2f75..0000000000
--- a/modules/examples/src/message_broker/index.dart
+++ /dev/null
@@ -1,30 +0,0 @@
-library angular2.examples.message_broker.index;
-
-import "package:angular2/src/web_workers/ui/application.dart"
-    show spawnWebWorker;
-import "package:angular2/src/core/facade/async.dart";
-import "dart:html";
-
-main() {
-  var VALUE = 5;
-  spawnWebWorker(Uri.parse("background_index.dart")).then((bus) {
-    querySelector("#send_echo").addEventListener("click", (e) {
-      var val = (querySelector("#echo_input") as InputElement).value;
-      ObservableWrapper.callNext(bus.to("echo"), val);
-    });
-
-    ObservableWrapper.subscribe(bus.from("echo"), (message) {
-      querySelector("#echo_result")
-          .appendHtml("<span class='response'>${message}</span>");
-    });
-    ObservableWrapper.subscribe(bus.from("result"), (message) {
-      querySelector("#ui_result")
-          .appendHtml("<span class='result'>${message}</span>");
-    });
-    ObservableWrapper.subscribe(bus.from("test"),
-        (Map<String, dynamic> message) {
-      ObservableWrapper.callNext(bus.to("test"),
-          {'id': message['id'], 'type': "result", 'value': VALUE});
-    });
-  });
-}
diff --git a/modules/examples/src/message_broker/index.ts b/modules/examples/src/message_broker/index.ts
deleted file mode 100644
index 07ba361c67..0000000000
--- a/modules/examples/src/message_broker/index.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-import {
-  PostMessageBus,
-  PostMessageBusSink,
-  PostMessageBusSource
-} from 'angular2/src/web_workers/shared/post_message_bus';
-import {ObservableWrapper} from 'angular2/src/core/facade/async';
-
-var webWorker = new Worker("loader.js");
-var sink = new PostMessageBusSink(webWorker);
-var source = new PostMessageBusSource(webWorker);
-var bus = new PostMessageBus(sink, source);
-const VALUE = 5;
-
-document.getElementById("send_echo")
-    .addEventListener("click", (e) => {
-      var val = (<HTMLInputElement>document.getElementById("echo_input")).value;
-      ObservableWrapper.callNext(bus.to("echo"), val);
-    });
-
-ObservableWrapper.subscribe(bus.from("echo"), (message) => {
-  document.getElementById("echo_result").innerHTML = `<span class='response'>${message}</span>`;
-});
-ObservableWrapper.subscribe(bus.from("result"), (message) => {
-  document.getElementById("ui_result").innerHTML = `<span class='result'>${message}</span>`;
-});
-ObservableWrapper.subscribe(bus.from("test"), (message: StringMap<string, any>) => {
-  ObservableWrapper.callNext(bus.to("test"), {id: message['id'], type: "result", value: VALUE});
-});
diff --git a/modules/examples/src/message_broker/loader.js b/modules/examples/src/message_broker/loader.js
deleted file mode 100644
index 0c41c9a0d7..0000000000
--- a/modules/examples/src/message_broker/loader.js
+++ /dev/null
@@ -1,38 +0,0 @@
-$SCRIPTS$
-
-//importScripts("math_worker.js").execute();
-//System.import("examples/src/web_workers/math_worker").then(function(m){console.log("got", m)});
-//importScripts("rx.js");
-
-// TODO: do this correctly with lang facade
-window = {
-  setTimeout: setTimeout,
-  Map: Map,
-  Set: Set,
-  Array: Array,
-  Reflect: Reflect,
-  RegExp: RegExp,
-  Promise: Promise,
-  Date: Date
-};
-assert = function(){};
-
-
-System.config({
-  baseURL: '/',
-  defaultJSExtensions: true,
-  paths: {
-    'rx': 'examples/src/message_broker/rx.js'
-  }
-});
-
-System.import("examples/src/message_broker/background_index").then(function(m){
-  console.log("running main");
-  try{
-    m.main();
-  } catch (e){
-    console.error(e);
-  }
-}, function(error){
-  console.error("error loading background", error);
-});
diff --git a/modules/examples/src/web_workers/message_broker/background_index.dart b/modules/examples/src/web_workers/message_broker/background_index.dart
new file mode 100644
index 0000000000..5611144797
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/background_index.dart
@@ -0,0 +1,12 @@
+library angular2.examples.message_broker.background_index;
+
+import "package:angular2/web_worker/worker.dart";
+import "package:angular2/src/core/reflection/reflection_capabilities.dart";
+import "package:angular2/src/core/reflection/reflection.dart";
+import "index_common.dart" show App;
+import "dart:isolate";
+
+main(List<String> args, SendPort replyTo) {
+  reflector.reflectionCapabilities = new ReflectionCapabilities();
+  bootstrapWebWorker(replyTo, App).catchError((error) => throw error);
+}
diff --git a/modules/examples/src/web_workers/message_broker/background_index.ts b/modules/examples/src/web_workers/message_broker/background_index.ts
new file mode 100644
index 0000000000..39f7b0935b
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/background_index.ts
@@ -0,0 +1,6 @@
+import {bootstrapWebWorker} from "angular2/web_worker/worker";
+import {App} from "./index_common";
+
+export function main() {
+  bootstrapWebWorker(App);
+}
diff --git a/modules/examples/src/web_workers/message_broker/index.dart b/modules/examples/src/web_workers/message_broker/index.dart
new file mode 100644
index 0000000000..4207b4364e
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/index.dart
@@ -0,0 +1,22 @@
+library angular2.examples.message_broker.index;
+
+import "package:angular2/web_worker/ui.dart";
+import "package:angular2/src/core/reflection/reflection_capabilities.dart";
+import "package:angular2/src/core/reflection/reflection.dart";
+import "dart:html";
+
+main() {
+  reflector.reflectionCapabilities = new ReflectionCapabilities();
+  const ECHO_CHANNEL = "ECHO";
+  bootstrap("background_index.dart").then((instance) {
+    var broker = instance.app.createClientMessageBroker(ECHO_CHANNEL);
+    querySelector("#send_echo").addEventListener("click", (e) {
+      var val = (querySelector("#echo_input") as InputElement).value;
+      var args = new UiArguments("echo", [new FnArg(val, PRIMITIVE)]);
+      broker.runOnService(args, PRIMITIVE).then((echo_result) {
+        querySelector("#echo_result")
+            .appendHtml("<span class='response'>${echo_result}</span>");
+      });
+    });
+  });
+}
diff --git a/modules/examples/src/message_broker/index.html b/modules/examples/src/web_workers/message_broker/index.html
similarity index 94%
rename from modules/examples/src/message_broker/index.html
rename to modules/examples/src/web_workers/message_broker/index.html
index aea5bc922f..dd783c3968 100644
--- a/modules/examples/src/message_broker/index.html
+++ b/modules/examples/src/web_workers/message_broker/index.html
@@ -2,6 +2,7 @@
 <html>
   <title>Message Broker Example</title>
 <body>
+  <app></app>
   <input type="text" id="echo_input" />
   <button type="button" id="send_echo">Send Echo</button>
   <p id="echo_result"></p>
diff --git a/modules/examples/src/web_workers/message_broker/index.ts b/modules/examples/src/web_workers/message_broker/index.ts
new file mode 100644
index 0000000000..5b9b4541a2
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/index.ts
@@ -0,0 +1,25 @@
+import {bootstrap, UiArguments, FnArg, PRIMITIVE} from "angular2/web_worker/ui";
+
+const ECHO_CHANNEL = "ECHO";
+
+var instance = bootstrap("loader.js");
+var broker = instance.app.createClientMessageBroker(ECHO_CHANNEL);
+
+document.getElementById("send_echo")
+    .addEventListener("click", (e) => {
+      var val = (<HTMLInputElement>document.getElementById("echo_input")).value;
+      // TODO(jteplitz602): Replace default constructors with real constructors
+      // once they're in the .d.ts file (#3926)
+      var args = new UiArguments();
+      args.method = "echo";
+      var fnArg = new FnArg();
+      fnArg.value = val;
+      fnArg.type = PRIMITIVE;
+      args.args = [fnArg];
+
+      broker.runOnService(args, PRIMITIVE)
+          .then((echo_result: string) => {
+            document.getElementById("echo_result").innerHTML =
+                `<span class='response'>${echo_result}</span>`;
+          });
+    });
diff --git a/modules/examples/src/web_workers/message_broker/index_common.ts b/modules/examples/src/web_workers/message_broker/index_common.ts
new file mode 100644
index 0000000000..c2fc51ee42
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/index_common.ts
@@ -0,0 +1,17 @@
+import {PromiseWrapper} from "angular2/src/core/facade/async";
+import {Component, View, ServiceMessageBrokerFactory, PRIMITIVE} from "angular2/web_worker/worker";
+
+const ECHO_CHANNEL = "ECHO";
+
+@Component({selector: 'app', viewBindings: [ServiceMessageBrokerFactory]})
+@View({template: "<h1>WebWorker MessageBroker Test</h1>"})
+export class App {
+  constructor(private _serviceBrokerFactory: ServiceMessageBrokerFactory) {
+    var broker = _serviceBrokerFactory.createMessageBroker(ECHO_CHANNEL);
+    broker.registerMethod("echo", [PRIMITIVE], this._echo, PRIMITIVE);
+  }
+
+  private _echo(val: string) {
+    return PromiseWrapper.wrap(() => { return val; });
+  }
+}
diff --git a/modules/examples/src/web_workers/message_broker/loader.js b/modules/examples/src/web_workers/message_broker/loader.js
new file mode 100644
index 0000000000..e86c1ba527
--- /dev/null
+++ b/modules/examples/src/web_workers/message_broker/loader.js
@@ -0,0 +1,19 @@
+$SCRIPTS$
+
+    System.config({
+      baseURL: '/',
+      defaultJSExtensions: true,
+      paths: {'rx': 'examples/src/web_workers/message_broker/rx.js'}
+    });
+
+System.import("examples/src/web_workers/message_broker/background_index")
+    .then(
+        function(m) {
+          console.log("running main");
+          try {
+            m.main();
+          } catch (e) {
+            console.error(e);
+          }
+        },
+        function(error) { console.error("error loading background", error); });
diff --git a/tools/broccoli/trees/browser_tree.ts b/tools/broccoli/trees/browser_tree.ts
index a0929c6bfa..ecb3214948 100644
--- a/tools/broccoli/trees/browser_tree.ts
+++ b/tools/broccoli/trees/browser_tree.ts
@@ -63,10 +63,10 @@ const kServedPaths = [
   'examples/src/material/progress-linear',
   'examples/src/material/radio',
   'examples/src/material/switcher',
-  'examples/src/message_broker',
   'examples/src/web_workers/kitchen_sink',
   'examples/src/web_workers/todo',
-  'examples/src/web_workers/images'
+  'examples/src/web_workers/images',
+  'examples/src/web_workers/message_broker'
 ];