4. The Doctor, The Widow And The Wardrobe - Steven Moffat
Yes this counts as Series 7, if it's in the box-set then it counts. This somewhat enchanting tale that is very reminiscent of Narnia was let down slightly by lack of any real villain and a bit of a weak plot. It was fun to watch and had a nice ending but other than that, it was fairly forgettable. The scene in which the Doctor is showing off his adjustments to the house is probably the best part of it, the lemonade taps and the hammocks really showing of the Doctor's personality. Another highlight comes when the Doctor returns to Amy and Rory, and we get a heartfelt reunion between the old friends. And who could forget the happy crying? It was a truly touching, human moment.