The CBC reports that Canada's Glenrose Rehabilitation Hospital is having a lot of success using the Wii to help hours of physical therapy fly by. The point is illustrated with the story of Albert Liaw, a boxer who suffered a brain injury in the ring that left him wheelchair-bound. But after four-and-a-half months, he was back on his feet.
His therapist, Don Simoneau, gives much of the credit to the Wii, saying "now when I see him playing today it's incredible to think back to where he was." The article goes on to say that Glenrose is the only rehab center in Canada to use the Wii, but doesn't mention if they're just the only place that could find one.