052: Logopolis

"It's the end… but the moment has been prepared for."   The final words of the boggle-eyed mentalist octogenarian Tom Baker, just prior to being trampled by a crusty ballet dancer and so triggering his metamorphosis into the world's wettest vet.   Jim and Martin start this episode by skewering The Time of the Doctor but then evaluate another regeneration story, 1981's Logopolis.   The fourth Doctor is old and grumpy and the Master is new and campy, while Adric "wunts" to help, Tegan wants to fly...