I really think that the exception handling by TypeMock needs to be improved. For example, one of my tests is throwing an exception but I dont know what it is because the excpetion gets masked by TypeMock when it tries to verify the mocks in the fixture teardown and all I see in the NUnit Gui is a TypeMock verification exception. This makes it a pain to debug the true problem because I have to find where the exception is occurring in my code and then wrap a try catch block around it and then step through the code with the debugger so that i can determine the exception.