Making a film, it uses a certain... 'pretend-muscle,' I don't know what you want to call it. It exhausts something in me, I find. It has to be really something to get me interested.

Generally speaking I would say I enjoy the smaller films more because there's a less sense of pressure and often the material is more unusual. But in "Iron Man" it was kind of like both worlds colliding because there was a lot of improvisation, not that we improv-ed in the scenes but to discover the actual scenes themselves.

I'm a pretty basic surfer.

Once, during an interview in front of my wife, I was asked, "Are you one of those actors who brings your character home? Do you stay in character?" I said, "No, not really. I don't do that," and she started laughing. I asked her why. She said, "Well, you might think you don't bring characters home, but you do." So, while I don't feel like a character is lingering, it probably is.

One of the tough things about being an actor, probably the hardest thing, is getting your foot in the door, and my father handled that for me at a very early age. It's funny, I get an image of the thing with eggs and chickens where, when the egg is getting ready to hatch, the little chicken will start to peck at the shell a little bit, and the mom will hear that and start to peck at the shell from the outside, and they're both kind of working together.

The problem with the designated driver programme, it's not a desirable job. But if you ever get sucked into doing it, have fun with it. At then end of the night drop them off at the wrong house.

I'm very much into the costuming of any character that I portray and it's one of the great things about making movies is it's a collaborative art form so you get all these artists who are looking specifically about for this instance your character's costume and what that might tell about your character.