An overwhelming amount of time, your processor sits idle or consumes roughly 5-10% of its maximum computing power. Put those idle cycles to use for helping cancer research with Folding@Home. Folding@Home is a distributed computing project which utilizes your unused processing power to simulate protein folding which, in turn, is being used for cancer research.

You can find all the information you need to join the PC Mech team here: http://forum.pcmech.com/showthread.php?t=82025
So get started! It only takes a few minutes to set up and you will be helping a very worthy cause.