from http://blog.us.playstation.com/2008/03/10/thatgamecompanys-24hr-game-jam/
thatgamecompany decided to stay at the studio for 24 hrs and make a game for the PS3 just for fun. Here is a gameplay vid. I don't know if they are going to put this on the PSN Store, but I hope they do. It looks like a lot of fun.
Not trying to be a fanboy. Of course, it's hard when you own the best console eve... dang it