It's been four months already, surely I can write a blog post with spoilers for a Christmas special?
The Bad News: Everybody falls into the furnace and dies. Not exactly uplifting in any way, and not even terribly well done. "You're not falling, Astrid, you're flying"?!?!!?
The Good News: I'm so sick of them subtly implying that the Doctor is some sort of all-powerful god figure all the time. Finally, they have made it explicit that he is Jesus Christ the Savior:
And if that's not enough to make it entirely clear:
You know how I feel about subtlety, after all.
Oh, also, I really like the new theme music. Well done, there.