At first I wondered what the hell, but then I realized what it was. This is for the parents that can't get their kids to stop playing video games and so the timer turns it off for them. Maybe they're working, or just want to use it as a tool. it's on the order of a kitchen timer, so it turns the game off when the time (that the parent sets) is up.
No more, 10 more minutes mom! I think this guy is going to make a mint!
http://videogames.yahoo.com/events/plugged-in/video-game-timer-knows-when-to-quit/1333725