Here's a couple more clips. The first one is a demo from last year with a number of different programs. Some just interactive visual generators, others are specific programs.

http://multi-touchscreen.com/

This clip is an interview at a recent tech show. Unfortunately the cameraman is not very good at keeping up with what the guy is doing on the touch screen. But watch about 2 minutes into it where he clips out a portion of an image in about 1 second with his finger tip.

http://www.thelastminuteblog.com/2007/03/19/new-jeff-han-video-multi-touch-ui/