Yesterday, the BBC announced that Peter Capaldi will become the 12th actor to portray The Doctor on the network’s long-running sci-fi series, Doctor Who. In the U.K., this was a pretty huge deal: Not only were auditions held in secrecy, but the announcement alone was given its own primetime special. For those unacquainted with the British hit, the first six seasons of the show’s reboot (the series kicked off again in 2005 after an initial 26-year run starting in 1963), are available on Netflix …