I like watching films when I don't know anything about the people.

I went through voice coaching. I was absolutely terrified. I thought my knees were going to buckle, and the first couple of takes I sounded like a pubescent boy. I didn't realise I was going to have to do it live.

My mum says that I was born 45, and I do remember at six thinking that I should be earning my own living.

It's a tricky one when you're playing somebody who is mad. There's often the big actor's question, if you're playing a part like that: do you take it to be an internalized thing, pull the audience in, or do you go full-out, and kind of present it as quite a shocking thing?

In film as a medium, you're often given a baddie and a goodie and told what to think about them; it's usually a very definite point of view.

I like to do the pictures before people get too self-conscious. I like to be spontaneous and get a shot before the subject thinks too much about it.

The whole point for me is to change as much as possible. If I've done one movie, I've done that, move on.