BumpTop Prototype : This is farily insane. It’s a prototype of a Windows desktop replacement that emulates real-word physics and real-word methods that people use to organize stuff on their real desks.
Keepin’ it Real: Pushing the Desktop Metaphor with Physics, Piles and the Pen
Watch the YouTube video. At first, I though it was fluff, but as the video went on, I can see how this would be really intuitive.