There are many different projects available to join such as FightAIDS@home which tries to find new medicines to fight HIV and AIDS, several projects doing protein folding (which may lead to cures for many different diseases), LHC@home which seeks to help the scientists at the Large Hadron Collider, and (the larges and oldest project) SETI@home which analyzes radio-observatory data in search of transmissions from Extra-Terrestrial Intelligent Lifeforms (aliens, that is).
You can download BOINC for Windows, Mac OS X, and Linux based computers at http://boinc.berkeley.edu/ .
Many projects allow you to join teams, or create your own. There's even a BleepingComputer.com team on some projects!
So, why not do a little something to help the world while you're working/playing/surfing with your computer?
Edited by Amazing Andrew, 23 April 2008 - 10:54 AM.