It's time to talk about one of Supernatural's great, not-so-hidden treasures: Castiel, played by Misha Collins. Unlike the endlessly sassy Crowley, this is one superhuman entity who delivers a whole different kind of charm. So, maybe he doesn't quite stack up against all the badassery of the Winchester brothers, but that's kind of why we love him so much, right? To help celebrate one of the lord's most beloved angels, keep reading for the best Castiel moments in Supernatural history . . . then brush up on a few of the show's golden insults when you're done.