diff --git a/spec/suites/ExceptionsSpec.js b/spec/suites/ExceptionsSpec.js
index 5494b1c..e111cf1 100644
--- a/spec/suites/ExceptionsSpec.js
+++ b/spec/suites/ExceptionsSpec.js
@@ -73,7 +73,6 @@ describe('Exceptions:', function() {
       });
     });
 
-    var runner = env.currentRunner();
     suite.execute();
     fakeTimer.tick(2500);
 
@@ -89,7 +88,7 @@ describe('Exceptions:', function() {
     expect(blockResults[0].message).toMatch(/fake error 1/);
 
     expect(specResults[1].passed()).toEqual(false);
-    var blockResults = specResults[1].getItems();
+    blockResults = specResults[1].getItems();
     expect(blockResults[0].passed()).toEqual(false);
     expect(blockResults[0].message).toMatch(/fake error 2/),
     expect(blockResults[1].passed()).toEqual(true);
@@ -101,7 +100,44 @@ describe('Exceptions:', function() {
     expect(blockResults[0].message).toMatch(/fake error 3/);
 
     expect(specResults[4].passed()).toEqual(true);
-
   });
 
+  it("should remove jasmine internals from reported stack traces", function() {
+    var spec;
+    var suite = env.describe('Suite for handles exceptions', function () {
+      spec = env.it('should be a test that fails because it throws an exception', function() {
+        function someNamedFunction() {
+          this.expect(true).toEqual(false);
+          throw new Error('fake error 1');
+        }
+        someNamedFunction.call(this);
+      });
+    });
+
+    suite.execute();
+
+    var webKitRegex = /^    at .*?(new |\.)([^. ]*) \((.+:[0-9]+:[0-9]+)\)+$/;
+    var firefoxRegex = /^([^.(]*)\(.*\)@(.+:[0-9]+)$/;
+
+    var stackLinks = spec.results().getItems()[0].stackTrace().split("\n");
+    var stackInfos = [];
+    for (var i = 0; i < stackLinks.length; i++) {
+
+      var match;
+      if (match = webKitRegex.exec(stackLinks[i])) {
+        stackInfos.push(match[2] + ": " + stackLinks[i]);
+      } else if (match = firefoxRegex.exec(stackLinks[i])) {
+        stackInfos.push(match[1]);
+      } else {
+        stackInfos.push(stackLinks[i]);
+      }
+    }
+    expect(stackInfos).toEqual([
+      "Error: Expected true to equal false.",
+      "__jasmine_Matchers_matcherFn__",
+      "someNamedFunction",
+      "<anonymous>"
+    ]);
+    expect({a:1,b:2,c:3}).toEqual({d:4,e:5,f:6});
+  });
 });
\ No newline at end of file
diff --git a/src/Block.js b/src/Block.js
index 75964a1..21d0aac 100644
--- a/src/Block.js
+++ b/src/Block.js
@@ -12,7 +12,7 @@ jasmine.Block = function(env, func, spec) {
   this.spec = spec;
 };
 
-jasmine.Block.prototype.execute = function(onComplete) {  
+jasmine.Block.prototype.execute = function __jasmine_Block_prototype_execute__(onComplete) {  
   try {
     this.func.apply(this.spec);
   } catch (e) {
diff --git a/src/Matchers.js b/src/Matchers.js
index 8219336..334dde2 100644
--- a/src/Matchers.js
+++ b/src/Matchers.js
@@ -45,7 +45,7 @@ jasmine.Matchers.wrapInto_ = function(prototype, matchersClass) {
 };
 
 jasmine.Matchers.matcherFn_ = function(matcherName, matcherFunction) {
-  return function() {
+  var wrapper = function __jasmine_Matchers_matcherFn__() {
     var matcherArgs = jasmine.util.argsToArray(arguments);
     var result = matcherFunction.apply(this, arguments);
 
@@ -84,11 +84,12 @@ jasmine.Matchers.matcherFn_ = function(matcherName, matcherFunction) {
     this.spec.addMatcherResult(expectationResult);
     return result;
   };
+  var fn = eval("(function __jasmine_Matchers_$" + matcherName + "$_Matcher__(matcherFn, args) { return matcherFn.apply(this, args); });");
+  return function() { return fn.call(this, wrapper, arguments)};
 };
 
 
 
-
 /**
  * toBe: compares the actual to the expected using ===
  * @param expected
diff --git a/src/base.js b/src/base.js
index fc4837b..b5f4ef3 100755
--- a/src/base.js
+++ b/src/base.js
@@ -57,24 +57,47 @@ jasmine.MessageResult = function(text) {
   this.trace = new Error(); // todo: test better
 };
 
-jasmine.ExpectationResult = function(params) {
-  this.type = 'ExpectationResult';
-  this.matcherName = params.matcherName;
-  this.passed_ = params.passed;
-  this.expected = params.expected;
-  this.actual = params.actual;
+(function() {
+  jasmine.ExpectationResult = function __jasmine_ExpectationResult__(params) {
+    this.type = 'ExpectationResult';
+    this.matcherName = params.matcherName;
+    this.passed_ = params.passed;
+    this.expected = params.expected;
+    this.actual = params.actual;
 
-  /** @deprecated */
-  this.details = params.details;
+    /** @deprecated */
+    this.details = params.details;
 
-  this.message = this.passed_ ? 'Passed.' : params.message;
-  this.trace = this.passed_ ? '' : new Error(this.message);
-};
+    this.message = this.passed_ ? 'Passed.' : params.message;
+    this.trace = this.passed_ ? '' : new Error(this.message);
+  };
+})();
 
 jasmine.ExpectationResult.prototype.passed = function () {
   return this.passed_;
 };
 
+jasmine.ExpectationResult.prototype.stackTrace = function () {
+  var trace = [];
+  var orig = this.trace.stack.split("\n");
+  var skipNext = false;
+  for (var i = 0; i < orig.length; i++) {
+    if (skipNext) { skipNext = false; continue; }
+    if (orig[i].match(/__jasmine_Matchers_matcherFn__/)) continue;
+    if (orig[i].match(/__jasmine_ExpectationResult__/)) continue;
+    var match;
+    if (match = orig[i].match(/__jasmine_Matchers_\$([^ .()]+)\$_Matcher__/)) {
+      trace.push(orig[i]);
+      trace.push(match[1]);
+      skipNext = true;
+      continue;
+    }
+    if (orig[i].match(/__jasmine_Block_prototype_execute__/)) break;
+    trace.push(orig[i]);
+  }
+  return trace.join("\n");
+};
+
 /**
  * Getter for the Jasmine environment. Ensures one gets created
  */