Oke, so this is the end of an era: the Capaldi-era and even more so: the Moffat-era. I'm sad to see Capaldi go, but not at all about the end of  'Moffat'-Who, I'm more than ready for a new type of storytelling! I thought this special was a fitting end for Capaldi's Doctor. The introspective style of the story fitted his take on the character. And I really liked him and the First Doctor together, a two Doctors team unlike any other! The villain not being a villain after all, was creative and a nice touch in a Christmas Special. I absolutely adore the story of the Christmas truce of 1914, but it felt way too much like an afterthought here. They could have used that story as a setting for a whole Christmas Special, instead of this little nod. In a review I read online someone asked the question: what was the plot? And that's a question I would also ask and one of the reasons I'm glad to see Moffat go. This was so much more of a philosophical monologue than a Christmas adventure and I seriously wonder if kids understand and enjoy an episode like this. So, not a top favourite, not even in my Top 5 of Doctor Who Christmas Specials. But memorable nonetheless, if only for the last speech of Capaldi as the Doctor. He really did speeches so well!