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The One Show sent Jon Culshaw to Gallifrey, via Cardiff, in our exclusive behind the scenes look at the Doctor Who Christmas Special.
David Tennant will be passing on the sonic screwdriver to a new Doctor next year. But who will play the role?
I don't know. But our resident Doctor Who fan, Researcher Dan from the web team, reckons he does. He's been looking at the bookies' picks and giving me his verdict. Dan says:
"David Morrissey (You'll know him from Blackpool and The Other Boleyn girl) is hotly tipped at 11/10 and is already appearing as the mysterious 'other Doctor' in the Christmas special, but this could work against him.
"Chiwetel Ejiofor - currently at 7/1 has the sci-fi background, having appeared in cult hit Serenity. His Shakespearian background could add some gravitas to the Doctor.
"James Nesbitt (Murphy's Law, Cold Feet) is coming in at 12/1 but James' name has been on the radar for playing the Doctor since before Christopher Eccleston and he never seems to get further than a rumour.
"My favourite to get the job is Paterson Joseph (Survivors, Peep Show) after it was inadvertently leaked during an interview on BBC News a few weeks ago that he may be up for the role. The rumours are so strong around him that many bookies have stopped taking bets."
Just in case you're wondering, our very own Adrian Chiles comes in at 200/1.
Who will be the next Doctor Who? Who should be the next Doctor Who? Let us know.