I've supported this no-kill sanctuary (Best Friends Animal Society) for a long time and I just love what they do. They're all about direct care/rescue (not politics).
Just received their recent newsletter at home - they are the ones who got
Michael Vick's dogs and here is a heartwarming update on how they are faring:
http://www.bestfriends.org/vickdogs/ (there is some great info about all the pit bull stuff in general too - very, very educational)