I came across this little gem earlier this week. I just had a chance to test it tonight. I pointed it to an assembly, and it generated NUnit tests. The test were devoid of code, but there were stubs for everything that can be tested. Sweet!

I'm one of those that are slowly getting into unit testing, and NStub is a time saver. Here's the URL:

http://code.google.com/p/nstub/