I feel like I'm away for much of my own life.

There are moments when, like all of us, you get a bit self-conscious and you'd rather not be living any of your day in public. Those are the awkward times, but you've got to have fun with it.

I'm always keen to use my body in my work, so I'm looking forward to the motion capture for Smaug. Both Gollum and King Kong were primates, whereas I'm playing a serpent, so it'll be interesting - I'll have to tie my legs together, possibly, or else they'll be kind of splayed out to the side as a reptile's should be.

I think I'm a very good driver. Apparently, the cause of road rage - as with most anger - is some kind of superiority complex, which, god knows, cars foster.

What's not to look forward to? It's like all the actors in all of the films. It's difficult to get Martin Freeman and I in a room together. Imagine what it's like to get myself, Chris Hemsworth, Robert Downey Jr., Elizabeth Olsen... these extraordinary actors who all have careers outside the Marvel Universe.

I was never geeky about anything.

I think the characters are supposed to be an open book, blank canvas.