This is all kinds of awesome.
It's like the SETI screensaver, only accomplishes something worthwhile:
"A new game, named Foldit, turns protein folding into a competitive sport. Introductory levels teach the rules, which are the same laws of physics by which protein strands curl and twist into three-dimensional shapes -- key for biological mysteries ranging from Alzheimer's to vaccines."
(Related link: http://www.sciencedaily.com/releases/2008/05/08050...)