It’s time to start the speculation, as Matt Smith has announced today that his final appearance as Doctor Who will be in the 2013 Christmas Special.
Reflecting on his four years of playing the time traveller, he released a touching statement that may also be The Most British Thing Ever, which you can read in full on [BBC](http://www.bbc.co.uk/news/entertainment-arts-22741493). For some reason, the final part brought a lump to my throat:

It’s been an honour to play this part, to follow the legacy of brilliant actors…but when you gotta go, you gotta go and Trenzalore calls. Thank you guys. Matt.

-sniff-

So, who’s going to take over? Robbie Coltrane? Steven Berkoff? George Clooney? Quentin Tarantino? Actually, that could work…