A new version of the Gamercize exercise machine is about to drop, and it's as cardio as ever. It will be available for all the new video game systems (360, PS3, Wii), and makes you exercise in order to play games. You can get a stair-stepper machine, or bike pedals, and as long as you're exercising, your remote will work. If you stop (read: your heart explodes), then your controller does too, but it's cool because you're already dead anyways.
Gamercise Makes You Exercise To Play [ubergizmo]