Perceptive Pixels Multitouch: Pretty Much The Precrime Interface from Minority Report
This is a much more impressive video than the one from (Siggraph?) last year. The UI that Tom Cruise's character uses in Minority Report blew me away and this video, which demonstrates "multitouch" on a big screen (rear projection, I imagine), is amazingly similar. Of course, what they're showing may not be a universally usable metaphor for users, but to me, this is like Engelbart demoing the mouse.