That's one of the great privileges, being an actor, is that someone pays you and sends you off to learn about something that otherwise you'd never know about.

The tricky thing becomes: Do you know yourself well enough to then portray that on screen? And for me, I find that really hard. I'd rather hide behind accents and funny walks.

Every job leaves its residue, a bit of extra knowledge, a new skill-set.

I always kept myself fairly fit.

There's a real sense of fighting and destruction in our DNA that we don't get in touch with.

To act with a tennis ball and imagine it's a tentacle, or if you're in some kind of wilderness film and you go, 'Okay, we can't have a grizzly bear here, but imagine when you step over the rock there there's a grizzly bear.' I don't know. They're tough moments.

Basically you want as many people as possible to see your movie.