CamSpace - Free Utility To Control Games Using Any Object Of Choice Via Webcam !!
Download:
http://www.camspace.com/
If you think Microsoft's under-development motion sensing technology Project Natal is cool and would like to do something similar right now, here is some outright geeky stuff for you - a free Windows utility which lets you control any game using any object of your choice tracked via your webcam, not convinced check out the video.
Download:
http://www.camspace.com/