Building up to this weekend’s launch of Peter Capaldi as the new Doctor, BBC America goes all in, all week, with Doctor Who-related marathons and specials. Beginning today at 8 a.m. ET, for example, BBC America repeats the first 10 specials in the Doctor Who – The Doctors Revisited nonfiction series, giving behind-the-scenes histories of the various men cast as The Doctor. At 1 p.m. ET, it’s Doctor Who: The Christmas Invasion holiday drama, followed at 2 p.m. ET by six episodes of Season 2 of the modern Doctor Who. And prime time carries additional goodies, including, at 9 p.m. ET, Doctor Who: The Ultimate Time Lord, a new special hosted by Peter Davison (the Fifth Doctor).