There's a new Linux distro that will boot an Xbox into a mode where it becomes a Linux box that automatically seeks out its peers on the network for the purpose of forming a distributed computing cluster. So long as MSFT is subsidising the purchase price of its PC-disguised-as-a-game-box, this seems like a promising approach to forming cheap-ass, pwoerful clusters. Also, you can always yank a box or two out and play some games.
(via /.)