Although there have been some neat webcam plugins for logitech, nothing on this level of tracking. Basically with a kinect camera, it would seem that with the right software it can track your facial expressions in real-time.
It even talks about how this could one day be used for world of warcraft or second life. I can only imagine how cool it would be if your second life avatar could mimic your facial expressions, especially having one of the opposite gender. I find it especially interesting that in his demo, he does briefly use a female avatar