AX: How did you come to cast Matt Smith as the Doctor?
MOFFAT:You’ve seen him. He came in and he was literally a hot young geezer and an eccentric boffin at the same time. He had a face with such strange angular planes that you couldn’t work out how it all joined together – “Come on, surely that goes back too far …” And he has the mannerisms of a fifty-year-old history professor and hair that looks like it was made by a factory. How could we not cast him?
GATISS:And he came in, and we went, “Well, that’s got to be him.”