Seriously, Nintendo is going in the right direction with their Wii controllers. Why not have wearable controllers, to make the gameplay more immersive?
Then, when you're battling the dragon, or having a shoot-out, you're using your whole body. Want to do more damage to the dragon/goblin? Swing your arm around faster. Want to avoid getting shot? Lay down on the ground.
Instead of sitting on the couch, eating chips, and getting a nasty case of repetitive stress disorder on your thumbs and wrists, we could actually be exercising.
You could spot the addicts because they'd be fit as all hell.