Getting the call to be in The Goblet of Fire was like being welcomed into the most exclusive upper circle of some elite actors' club. You sit on set … - David Tennant

I was once asked for my autograph in the shower on one of my rare visits to the gym. I was washing my hair, facing the wall, when I was tapped on the shoulder so already it's quite inappropriate. I turned round and there was another naked man standing there with a piece of paper. And I think 'if you can't see how inappropriate this I am just going to have to play along' so I took the paper, which is slowly becoming mulch, and carved my name in it.

The Doctor does have some long speeches and he talks very quickly. Learning all his babble can take a while, but it's very well written babble so I don't mind and you do get quicker. When I filmed Recovery during the break in Doctor Who I would sit down at the weekend and learn the script in an hour and I was like 'Hang on??' You do get used to it though.

Billie and I got chased through the traffic once in a car. You expect paparazzi to do that, but when it's normal people you start to think the world's gone a bit mad.