An obvious idea:

As they point out, if you have a computer with either an ATI or nVidia graphics card, chances are you have more than 100 microprocessor cores waiting for use. While these cores have been optimized to deliver high performance graphics for games and video, there's an effort to harness these processors for general use.

Always wondered how long before this sort of thing happened. It's not like that processing power is doing much when you ain't playing Doom 3. Anybody familiar with the way the Atari Jaguar works/ed should have seen this one coming.