There's a space-related blog called "Transterrestrial Musings" that is occasionally political, and rather right of center I think. Anyway, there's a lively thread
here that goes over the whole NSA Wiretapping debate. One of the responders politely, succinctly, and implacably demolishes every argument leveled in favor of the president's actions, without becoming intemperate. She's been at it a couple of days now, and it's really a pleasure to read - there's not a hint of rancor.
I wish I could be this patient with my right-wing friends and relatives.