The Doctor, the Window and the Wardrobe FREE on iTunes
Yep, last year's Christmas special, the whole episode, for free
(obviously just for a limited time). Nice little Christmas present for those who don't already own it.
"Human beings worship the great god Santa, a creature with fearsome claws, and his wife Mary. And every Christmas Eve, the people of UK go to war with the country of Turkey. They then eat the Turkey people for Christmas dinner like savages."