Unlike other exercise machines, the Gamercize GZ Sport from ThinkGeek will actually disconnect your PS2 controller if it detects laziness. Video after the jump.
The Gamercize GZ Sport exercise and gaming peripheral attaches to your Playstation 2, bypassing your controller. The pedal or stepper attachment notices when you’re working out, and when you’re slacking. If you’re working hard enough, your controller remains connected to the console. If you stop, your play is interrupted