Doctor Who Season 3 (US) premiere tonight on SciFi

Rhinocerous cops, villains made entirely of leather, and a London hospital relocated to the surface of the moon all feature in this charming, hilarious third-season opener of the British sci-fi series. The episode also provides David Tennant's time-traveling alien title character with a new assistant: med student Martha Jones (Freema Agyeman). By the look of things, they may soon be playing doctor. Well, technically, it would be alien doctor. But that sounds a lot less sexy. Or does it?