This is fascinating - Walter Reed is using the Wii in physical therapy sessions with injured veterans. Unsuprisingly, the patients find the games more enjoyable than the repetitive motion exercises more commonly used:

"Wii games like tennis or boxing can help increase range of motion, and patients enjoy them much more than doing ten repetitions of an exercise," says Lieutenant Colonel Stephanie Daugherty, chief of occupational therapy at Walter Reed. "We also have an Xbox for finger range of motion, and Dance Dance Revolution, which helps with balance and sequencing."

Console games: they're not just for parties anymore.