PlanetQuest - Like SETI@Home, only you search for alien planets
Planets Lurk on Your Desktop
Scientists team up to create a distributed computing program to search for extrasolar planets. Their offer to volunteers: You find it, you name it. By Amit Asaravala.
http://www.wired.com/news/space/0,2697,66757,00.html?tw=wn_story_mailer