You don’t see too many new interface designs for organizing “stuff” on your PC. Bumptop (see TED video) one is interesting and amusing because it accommodates “messiness” better than any other interface out there.
I love designer Bruce Mau’s An Incomplete Manifesto for Growth that articulates the way that creative people work. #25 in a list of 43 statements reads:
25. Dont clean your desk. You might find something in the morning that you cant see tonight.
This may be just the right desktop interface for him and the rest of us who keep messy desks.