Ah, Mawdryn Undead. A brilliant story, with the Brigadier back in full force. Well, once he is. I liked Turlough's introduction, and I liked how the Blintovich Limitation Effect is demonstrated, along with the Brigadier's montage bit, especially now that most of the actors in that section have passed away. I thought that Mawdryn was an interesting character, and that the change of stakes was a nice one. I also enjoyed the Black Guardian's tunnel effect, even with the 1980's CGI.