This product has now been launched in a free and paid for version, check it out now.
This is a prototype desktop called Bump Top that imitates real life document behaviours, but in a 3D space. Eg, stacking documents on top of one another, or throwing them around.
This looks very interesting, but personally I think that it looks sort of messy, and I really want to know why there aren’t any document names on the document. Then again I guess it is still a prototype.