I go and see music all the time.

Normally, I would do research. For The Constant Gardener, I played an activist, so I went to meet activists. You can find them dotted around. But with The Brothers Bloom, I couldn't meet a nutty heiress who lived in a bubble in a mansion. There was no one to meet. So this was just an active imagining, a daydream.

I just think that things get easier as you get older and wiser and more experienced. You get more confident about who you are as you get older. I find that really comforting.

I feel like I'm one of the many working mothers. And I only have one child. I know working mums who have three or four. It's definitely a challenge but it's a wonderful challenge to be able to do both.

Because I think in order to get famous you have to be known for something. Like 'You're the romantic comedy girl' or 'You're the Oscar-winning whatever girl.'

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.

I'm thinking of doing more theatre. It makes me very happy.