Yes, I know, we’re skipping a finale. It was depressing even if Martha does finally come to her senses and leave the Doctor flat, and the Master is a terrific Big Bad. Long overdue, Martha, that’s what I say. Instead, we’re doing another Christmas special. Yes, London is under attack at Christmas. Again. It’s “Voyage of the Damned,” aka “The Poseidon Adventure in Space” featuring the pluckiest waitress this side of Pluto. And, of course, the Doctor.