Gesture control has always been something that intrigues a lot of us in the department. For me it began with the clapper, it then evolved to the Nintendo Wii. In the Link below there is an article that shows off a new system of control that uses a web cam (much like the eye toy) to track movement and gestures in order to control what is on the screen. I do believe that there is lots of interesting things that will come out of gesture controls, but one of the main hindrances in my opinion is the fact that it is not for the lazy. Read the article and judge for your self!
http://www.engadget.com/2008/11/06/mgestyk-system-promises-gesture-control-on-the-cheap/