Microsofts Eye Toy equivalent has recently been released for Xbox 360 (there isn't one for the original Xbox). It's called 'Live Vision Camera' and is priced around �34.99. It's mainly being used as a webcam at the moment allowing xbox live users to see each other. Some games in development will allow you to use the camera to put your own face into games. To my knowledge there is currently only one game that uses the camera to sense your movements for gameplay. It's called Totemball and from what I've read it's not that great. I would imagine there are more games currently in development.