What do you do with your computer when nothing is running?

Don't know about you guys, but I don't really like to waste my computer processing power when it's doing nothing. I've been running this software for abt 4 - 5 years? It's called BOINC. Before this it was called SETI@Home.

You can basically select what do you want the software to run from various organizations. It's all profit-free, or so they say. You can run stuff like proteins research, physics, or even chess game probabilities. Check it out.

BOINC

And here's the wikipedia entry

BOINC Wiki

For those who run it, when you want to use processor intensive stuff. like. BF2142! or, WoW. okay. maybe not WoW. just shutdown the prog.