Your body is the joystick: Motivatrix's MX9 Workout Master

More cool toys to battle obesity in an electronically addicted age. Motivatrix MX 9 Workout.

This one is modeled after Dance Dance Revolution. Not only does it read your foot movements, it also picks up hand flailing and other body movements.

http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/04/02/BUGSOOV2GV1.DTL