I was advised by an American agent when I was about 19 to change my surname.

Seeing someone you know be good at something is really appealing. Seeing how Darren Aronofsky behaved on set, it was another aspect of him, the director. He'd never directed me at home in the kitchen before. It was just seeing a whole other aspect of someone. It was really, really exciting. I loved it.

It is a political thriller. It's very action packed and it's very exciting, but at the same time it's a very big soulful love story about longing and loss. They're not separate, they're completely dependent on one another.

Film is such a director's medium; you're really in their hands in terms of the real storytelling. As an actor, you can give a performance moment to moment and some of your takes will be used and some of them won't. I think there are great films you can make with bad performances, and vice versa. There are all combinations of those things. It's really down to the director what happens, I think, so that's why it's really good to work with very talented, bold directors.

I was offered more work after the Oscar. When I was younger, I would take whatever I was offered because it was money and work and experience. In a way, choosing is the hard part. I know that's a luxury problem, but it's true. I try to go where passion takes me.

I think mystery is kind of great. I don't know anything about Bette Davis or Katharine Hepburn or Ava Gardner - not really - and I like that. I love watching their movies because they're my personal movie stars. I don't know what they eat and who their trainer is.

As a child I was the best tree climber in our neighbourhood, I was like a little monkey. I've never been afraid of hurting myself or a little physical discomfort.