Lightspace

Besides creating an interactive gaming platform, Lightspace Corporation's touch sensitive, LED powered displays encourages participation through gameplay (lights, sound and social interaction).

PCGamerBike

Control your PC games with the PCGamerBike using the recumbant bike or

Dogfight

Electronic Sports showcased their recumbant workout bike with arm controllers at the 2007 IHRSA National Fitness Trade Show. Pedal your way to victory in this flight simulator which features in-factility and online competitions. It looks a little like the MIT GameCycle from a few years ago.
[Via Gym Sucks]