The series returns with its full cast, mostly nobody you've heard of outside of, well, Merlin, with the exception of Anthony Head, who will always be Giles from Buffy to us. He plays Uther, the king of Camelot, and he's kind of a jerk, even though Merlin keeps saving his life and his son Arthur wants nothing more than to live up to his expectations. While Merlin isn't allowed to practice wizardry in the magic-free kingdom, every episode features some kind of sorcery, plus there are plenty of CGI creatures about and occasionally Merlin and Arthur tolerate each other enough to act like very young buddy cops. There are guest stars, too, if you like obscure British actors. Mackenzie Crook, who appears in tonight's episode, played Gareth (the proto-Dwight) on the U.K. version ofThe Office and was the pirate with the wooden eye in Pirates of the Caribbean. If that doesn't sell you on the series, I'm really not sure what will.

Merlin airs tonight at 10/9 C on Syfy. Catch up on Season 1 episodes here, then read about more of our favorite cancelled medieval dramas!