This could be big for people with conditions that affect motor control, such as muscular dystrophy or polio. There's also a Second Life demonstration video. Though the team's website is currently down, there's a lot of food for thought in these videos. I can see a system like this dramatically improving quality of life for people with crippling disabilities, and also for, as one commenter put it, 'insanely lazy people'.
Videos after the break!