from the oh-this-will-only-make-me-look-more-dumb dept.
tasty_beanburger writes "NewScientistTech has a story about a full body version of Dance Dance Revolution. It uses vision recognition to award points after assessing a player's ability to correctly mimic silhouetted dance shapes. Check out the video clip of it being demoed at SIGGRAPH 2006."
Any sufficiently advanced technology is indistinguishable from a rigged demo.