The Doctor Who Christmas episode has begun filming today and Steven Moffat had this to say about the special:
"Oh, we're going for broke with this one. It's all your favourite Christmas movies at once, in an hour, with monsters and the Doctor and a honeymoon and – oh, you'll see. I've honestly never been so excited about writing anything. I was laughing madly as I typed along to Christmas songs in April. My neighbours loved it so much they all moved away and set up a website demanding my execution. But I'm fairly sure they did it ironically."[IGN]
The as yet untitled Doctor Who Christmas episode will air on Christmas day, time to be determined.