Doctor Who: The End of Time (1)

The Narrator: 'This was the day the Time Lords returned. For Gallifrey! For victory! For the end of time itself!'

With the exception of 2005's 'The Christmas Invasion', Yuletide episodes have never been the show's strong suit. After season three's 'The Last of the Time Lords', I had visions of this year's offering being another gag-laden, testosterone-fueled, face-off between the Doctor and the Master—high on festive cheer, but distinctly lacking in satisfying storytelling. How wrong I was. I was pleasantly surprised by this episode. It wasn't perfect, but the flaws were minor and the storytelling epic. I even enjoyed the Master's return! How's that for a Christmas miracle?

Doctor Who: Planet of the Dead

Carmen: "No, but you be careful, because your song is ending, Sir. It's returning. It's returning through the dark and then Doctor, oh, but then. He will knock four times."

According to Russell T. Davies, 'Planet of the Dead' was the Doctor's last chance to have some fun. It's common knowledge now that the Doctor's just four episodes away from his end, so this was Ten's last chance to embark on one last old-fashioned romp, before the serious business of his dying begins in earnest. Something is returning. Carmen doesn't specify what, but we can be almost certain that whatever it is, it'll mean the end of the road for David Tennant.