The buildup to tomorrow’s new Christmas Day episode of Doctor Who continues, with another all-day marathon of Doctor Who episodes – all day, that is, except for the 11 p.m. ET interruption of the latest, and last, episode of the new animated series, The Power of the Daleks, based on audio from the original 1960s British Doctor Who series. Six episodes were animated and recreated in this new form, and the sixth episode premieres tonight.