diff --git a/lib/jasmine-0.10.0.js b/lib/jasmine-0.10.0.js
index f7f621b..d5abe6a 100644
--- a/lib/jasmine-0.10.0.js
+++ b/lib/jasmine-0.10.0.js
@@ -1201,12 +1201,28 @@ jasmine.Matchers.prototype.wasCalledWith = function() {
   }
 
   this.message = function() {
-    return "Expected spy to have been called with " + jasmine.pp(arguments) + " but was called with " + jasmine.pp(this.actual.argsForCall);
+    if (this.actual.callCount == 0) {
+      return "Expected spy to have been called with " + jasmine.pp(arguments) + " but it was never called.";
+    } else {
+      return "Expected spy to have been called with " + jasmine.pp(arguments) + " but was called with " + jasmine.pp(this.actual.argsForCall);
+    }
   };
 
   return this.env.contains_(this.actual.argsForCall, jasmine.util.argsToArray(arguments));
 };
 
+jasmine.Matchers.prototype.wasNotCalledWith = function() {
+  if (!jasmine.isSpy(this.actual)) {
+    throw new Error('Expected a spy, but got ' + jasmine.Matchers.pp(this.actual) + '.');
+  }
+
+  this.message = function() {
+    return "Expected spy not to have been called with " + jasmine.pp(arguments) + " but it was";
+  };
+
+  return !this.env.contains_(this.actual.argsForCall, jasmine.util.argsToArray(arguments));
+};
+
 /**
  * Matcher that checks that the expected item is an element in the actual Array.
  *
@@ -1437,14 +1453,14 @@ jasmine.PrettyPrinter.prototype.format = function(value) {
       this.emitString(value);
     } else if (jasmine.isSpy(value)) {
       this.emitScalar("spy on " + value.identity);
+    } else if (value instanceof RegExp) {
+      this.emitScalar(value.toString());
     } else if (typeof value === 'function') {
       this.emitScalar('Function');
     } else if (typeof value.nodeType === 'number') {
       this.emitScalar('HTMLNode');
     } else if (value instanceof Date) {
       this.emitScalar('Date(' + value + ')');
-    } else if (value instanceof RegExp) {
-      this.emitScalar(value.toString());
     } else if (value.__Jasmine_been_here_before__) {
       this.emitScalar('<circular reference: ' + (jasmine.isArray_(value) ? 'Array' : 'Object') + '>');
     } else if (jasmine.isArray_(value) || typeof value == 'object') {
@@ -2241,5 +2257,5 @@ jasmine.version_= {
   "major": 0,
   "minor": 10,
   "build": 0,
-  "revision": 1259251766
+  "revision": 1261424713
   };
diff --git a/spec/suites/SpySpec.js b/spec/suites/SpySpec.js
index 1e782fb..37dd04f 100644
--- a/spec/suites/SpySpec.js
+++ b/spec/suites/SpySpec.js
@@ -33,8 +33,8 @@ describe('Spies', function () {
 
     TestClass.someFunction('foo');
     TestClass.someFunction('bar');
-    expect(TestClass.someFunction.argsForCall[0]).toEqual(['foo']);
-    expect(TestClass.someFunction.argsForCall[1]).toEqual(['bar']);
+    expect(TestClass.someFunction.calls[0].args).toEqual(['foo']);
+    expect(TestClass.someFunction.calls[1].args).toEqual(['bar']);
     expect(TestClass.someFunction.mostRecentCall.args).toEqual(['bar']);
   });
 
@@ -184,4 +184,4 @@ describe('Spies', function () {
     expect(spyObj.method2.identity).toEqual('BaseName.method2');
   });
 
-});
\ No newline at end of file
+});
diff --git a/src/Matchers.js b/src/Matchers.js
index 79f5d53..fd88829 100644
--- a/src/Matchers.js
+++ b/src/Matchers.js
@@ -198,12 +198,28 @@ jasmine.Matchers.prototype.wasCalledWith = function() {
   }
 
   this.message = function() {
-    return "Expected spy to have been called with " + jasmine.pp(arguments) + " but was called with " + jasmine.pp(this.actual.argsForCall);
+    if (this.actual.callCount == 0) {
+      return "Expected spy to have been called with " + jasmine.pp(arguments) + " but it was never called.";
+    } else {
+      return "Expected spy to have been called with " + jasmine.pp(arguments) + " but was called with " + jasmine.pp(this.actual.argsForCall);
+    }
   };
 
   return this.env.contains_(this.actual.argsForCall, jasmine.util.argsToArray(arguments));
 };
 
+jasmine.Matchers.prototype.wasNotCalledWith = function() {
+  if (!jasmine.isSpy(this.actual)) {
+    throw new Error('Expected a spy, but got ' + jasmine.Matchers.pp(this.actual) + '.');
+  }
+
+  this.message = function() {
+    return "Expected spy not to have been called with " + jasmine.pp(arguments) + " but it was";
+  };
+
+  return !this.env.contains_(this.actual.argsForCall, jasmine.util.argsToArray(arguments));
+};
+
 /**
  * Matcher that checks that the expected item is an element in the actual Array.
  *