Darvill’s first day was less dramatic. “Arthur fell asleep on his first day on set. He’s a big sleeper,” says Smith. “We were upstairs on a roof and filming the scene in ‘The Eleventh Hour’ where I sort of walk through the 10 previous Doctors and go, ‘Hey, how’s it going, guys. I’m No. 11.’ And he kept sleeping between takes… in his nurse scrubs.