Here's something from CES for the gamers. Powergrid Fitness' new Exer-station gaming controller gives you a workout while you play.
It works like a huge joystick with variable levels of isometric resistance. You put it on a chair or stool, sit down and then push or pull the controller to go in the desired game direction. They're saying it burns around 350/hr, roughly the same as recreational swimming or cycling. I only played -- I mean, I only worked out -- for a few minutes, but I could tell it was doing something for me.
The controls worked well for the racing games they had going, but it might not work too well with an FPS, for instance. If you just can't tear yourself away from your Xbox (or PC, or Playstation), though, it might be a fun route to a more toned you.
Suggested price for the Exer-station is US$199, much less expensive than their current Kilowatt product, which has you stand up to play and works more muscles. It will be in select BestBuy stores, and you can also get it from their Web site.