My buddy Ayush forwarded me a link to a research project video over at NYU:
Multi-Touch Interaction Research
Aside from being very cool technology, I love the way this demo video shows a variety of practical applications - manipulating photos and video, navigating maps, playing games, DJ'ing.
I've been seeing more and more of these demos lately. They always remind me of the movie Minority Report. Can't wait to have one in my living room.