I'm putting in my vote for the priority++ on this one...it's a feature of Rhino Mocks that I wish was also present here; however, unlike Rhino Mocks, making it a little more 'clear' as to what to do would be helpful and having a global Arg.Anything that you can use when you just don't care across the board (versus Arg.<T>.Is.Anything which is too verbose)...this will be helpful also when your argument is just a pointer to a function.
