The video below is of Anand Agarawala presenting BumpTop, a cool natural feeling user interface that takes the usual desktop metaphor to a whole new level. It emulates the physical world and your own desk down to the physics of it. You can throw things, stack things, crumple things, lay them out like a poker deck. You can make important things big, fold other ones, pin a third to the wall.

Put this together with decent tactile experience and we’re really getting somewhere. Watch it on ted.com