NYU's ITP 2008 (Interactive Telecommunications Program) Spring show had some innovative "exergame" type projects including Thomas Chan and Mitch Said's Ukikit foosball game. With sensors attached to your feet move side to side to make your team move laterally on screen and then make a kicking motion to ckick the ball. To accomplsh their project the used "color camera recognition, sonar distance recognition and java software". I love how many physically interactive games are being made and I really think we are just scratching the surface.
Via Working Theory