It hasn’t aired yet, but you can preorder your copy of Doctor Who: A Christmas Carol on Amazon with a release date of February 15th, 2011.
Doctor Who: A Christmas Carol
Starring: Matt Smith , Karen Gillan , Michael Gambon , Katherine Jenkins
Directed by: Toby Haynes
Produced by: Sanne Wohlenberg , Piers Wenger , Steven Moffat
Written by: Steven Moffat
Matt Smith and Karen Gillan return as the Doctor and his companion in an all-new Doctor Who Christmas special. Amy and Rory are trapped on a crashing space liner, and the only way the Doctor can rescue them is to save the soul of a lonely old miser, Kazran Sardick. But Sardick, the richest man in Sardicktown, beyond redemption?