1. A Christmas Carol
How could anything else be number 1? What could possibly be more Christmassy and more ripe for a Doctor Who reimagining than Charles Dickens' beloved time-travelling ghost story? This was a no brainer, and it's amazing to think it took them six years to finally do it. A Christmas Carol (Doctor Who edition) is as festive as it gets - the brilliant Michael Gambon is the perfect surrogate Scrooge, while Matt Smith - brilliant as always - plays the Doctor as something between Mary Poppins and Jacob Marley. It's also, bafflingly, the first of the Christmas episodes that actually plays from the point of view of a child (who'd have thought?) and is of course rife with Moffat's trademark time-bending plot developments. All the crucial elements from Dickens' classic are there but utilised in inventive ways - the ghosts are either holograms or men with Time Machines, the 'surplus population' are captive citizens used by Gambon's Kazran Sardick as collateral from his many debtors, and the man's redemption is both a personal triumph and a typically Doctor Who, planet-saving one. It's hard to believe Moffat followed this up with the lacklustre The Doctor, The Widow and The Wardrobe, but then, Davies followed his stellar debut with a bland remake. The reason A Christmas Carol makes the number one spot is because, beyond being a great Doctor Who story, it is a pure Christmas classic: completely standalone, full of festive cheer and utterly Dickensian. It has no motive beyond being a great Christmas story, and it succeeds on every count. This is what Christmas is all about. Have a merry one!