Building up to Sunday’s brand new Christmas Day special episode of Doctor Who, shown in the States at 9 p.m. ET on BBC America, the network already has started repeated Doctor Who episodes, in an unbroken multi-day marathon, in the days leading up to the first new Who in a year. So if you’ve been in withdrawal from an absence of the Tardis and its occupants, tune in to BBC America any time. It’s just what the Doctor ordered.