I've been listening to a lot of Air America Radio. Some of the shows are just a little overloaded with angry liberal propaganda, but Al Franken's show (The O'Franken Factor) keeps in light and is pretty darn funny. Another pretty decent show is Unfiltered, where I just heard from the famous blogger Joshua Micah Marshall.
It's streamable, and worth a try. Just know some of it, like The Randi Rhodes Show, comes on too strong.
