I've posted a few of these before, but this is a bit longer (almost 4 minutes) and super cool. It's a video of a Multi-Touch Computer, using multiple touches to control what is going on on a big screen in front of you. Similar to the demo that showed interacting with a map application and using your hands to move / zoom, spreading fingers or hands farther away to zoom in, of together to zoom out, but with so much more. Thanks to forgetfoo for posting.