http://www.innocenceproject.org/
The Innocence Project is a national litigation and public policy organization dedicated to exonerating wrongfully convicted people through DNA testing and reforming the criminal justice system to prevent future injustice.
This seems like a great project and I'm really excited to see that there are so many member groups across the country. The link below directs you to a page where you can access a pdf detailing the 27 people who were exonerated with the help of the innocence project in 2009.
http://www.innocenceproject.org/news/Innocence_Network_Exonerations_09.php