Trees, snow, lights, magic screwdriver … yes, it’s time for the Doctor Who Christmas special. Here’s a flurry of newly released images from the program that marks Matt Smith’s final episode starring as the 11th Doctor. “The Time of the Doctor” will air — when else? — Dec. 25 at 9:00 p.m. Official description: “Orbiting a quiet backwater planet, the massed forces of the universe’s deadliest species gather, drawn to a mysterious message that echoes out to the stars. And amongst them – the Doctor. Rescuing Clara from a family Christmas dinner, the Time Lord and his best friend must learn what this enigmatic signal means for his own fate and that of the universe.” Below are pics from the special along with a teaser trailer and a BBC Christmas promo that’s got a little bit with the Doctor and Clara mixed in….