Official video from the Paley Center NYC Q&A
Matt talks about finding out he had been cast as the Doctor and auditioning with Karen; Steven talks about the decisions to cast both of them ("she's Scottish, which is an obvious improvement"); and more. My favorite quote from Matt: "There is no other TV show to my mind that is not bound by space or time or logic or genre or place...every 12 days, those 5 things change....as an actor, you can't really ask for more."
cross-posted to doctorwho