This is a pretty solid resource for anyone who doesnt know where to start. Good tips on finding what types fo programs would be most rewarding for you.
I mean does anything really need to be said? This is the Peace Corps and its not for the faint of heart.
table showing United States voter Statistics since the 60's
Listing of Senators by State. Along with their contact information
ACLU Congressional Scorecard
This is a good resource to find ways to volunteer and how to best make use of stumbleupon as a tool to volunteer
this is the distance volunteering website. You should be able to volunteer right from computer desktop.
This is a great resource if you are attempting to plan an adventure trip or something like that. It would be ideal to hook up with one of these projects while you are in the area on vacation or something.
This seems like a really interesting site, I should come back to this and check it because I would be interested to see what it has for me.
Hands on Bay Area has a lot of good volunteer opportuniites available.