Doctor Who (2005)
The Doctor seems human. He's handsome, witty and could be mistaken for another man in the street. But he is a Time Lord: a 900-year-old alien with two hearts, a member of a gifted civilization that has mastered time travel. The Doctor saves planets for a living - more of a hobby, really, and he's very, very good at it. He saved us from alien threats long ago - but who is he?
