I know this is going to be an unpopular opinion, but I thought the
Doctor Who Christmas special wherein the regeneration happened was terrible. There are spoilers below, so if you haven't seen it, you might want to stop now.
Okay, yet again, the Doctor and his companion are not together at the start of the episode. Why the fuck not? If she's the companion, why doesn't she actually travel with the Doctor? Why doesn't Moffatt want the companions to actually be anywhere near the Doctor?
They come together not because he needs her help or wants her around, but because she needs someone to play the part of her boyfriend at Christmas dinner. But the Doctor doesn't do Christmas - this is well established. And she needs him to leave a planet surrounded by every villain the Doctor has ever faced so he can pretend to be her boyfriend. And he goes. What the fuck?
The whole nudity thing was completely unnecessary time-filler.
So then there's this big thing about signal being heard through the entire universe and for some reason, the Doctor has befriended the head of a Cyberman which can translate the signal and identify the planet...that the TARDIS can't. What's wrong with the TARDIS that it can't identify the signal or the planet?
And then we meet another woman who has some rather forced sexual tension with the Doctor while Clara is exposed to the Silents. Why are the Silents there? Why are they not killing the people in the temple mainframe? But this temple mainframe thing can put the Doctor onto the surface of the sort-of-unidentified planet (or mis-identified planet), but he's not allowed to take technology with him and they see through his holographic clothing to see his TARDIS key, but they can't see through his wig? Which, again, completely unnecessary time-filler to have him be actually bald but wearing a wig.
So he gets his TARDIS back on the surface of the planet and finds the crack in the wall, because we haven't been saturated with enough throw-backs to rather dull things that happened in the last few years, and the signal coming through the crack is the question, "Doctor Who?" which the Time Lords are asking because they want to be able to identify that they have found the Doctor and can therefore return to this universe. Oh, and the Doctor also seems to have forgotten everything that happened in the 50th anniversary special episode, as he protests the possibility of the existence of Gallifrey and other Time Lords existing. But the Doctor is now in the position of either saying his name, which will allow Time Lords to return and the Time War to resume, or he can leave the planet, which means all of the baddies surrounding it will burn the planet and the seemingly dozen people who live there in the town called Christmas where you can't lie. So what does the Doctor do?
Nothing.
He does nothing. He takes no action. He sends Clara away via the Rose Tyler fake-out, and then proceeds to give up and grow old in this town called Christmas. Because apparently, if he just dies there of natural causes, the possibility of burning up the planet is taken away? And why don't the baddies, who hate the Doctor anyway (as evidenced by the fact that they keep trying to break into Christmas town to kill him) just burn the planet as some point anyway? His method of "protecting" the planet is disabling the tech that comes to kill him. (And seriously, who equips a wooden Cyberman with a flame thrower? Did nobody see that potential conflict of "technology?") He's not actually scaring the baddies away. If they all banded together to burn the planet in the 300 or so years the Doctor is doing nothing, the whole thing could be taken care of in a matter of seconds.
But then poor Clara has to return, and be sent away again, and return again, so she can tell the crack in the wall that he is, in fact the Doctor and that's all they need to know, so they send him some extra regeneration energy (which is, apparently also now a nuclear weapon of sorts), and he decimates the surface of the planet himself, thereby somehow magically saving everyone and taking his own sweet time regenerating into Peter Capaldi. Who did have a really fun line at the end.
So basically, we got sixty minutes of plot holes, forced sentimentally that ultimately failed, the Doctor doing nothing but talking about how he's lost hope and is going to die, and one funny line from Peter Capaldi.
Thank goodness for Peter Capaldi.
And can we get someone other than Stephen Moffatt to write the big, important episodes from here on out so they have, you know, something going on?