Use your webcam to play free online games using only your body as the controller.
http://www.iamironman2.com/uk/
http://www.weareautobots.com
http://www.lorenzgames.com/game/motion-bubbles
http://www.lorenzgames.com/game/night-of-the-ninja
http://www.newgrounds.com/portal/view/429564
http://www.playdojam.com/