It's quite frightening; the business of trying to be funny is very hairy. In comedy, the potential for humiliation is huge. Trying to be funny and failing is about the most embarrassing thing you can do.

It's very difficult to find the time or the money for people to organize rehearsals for some movies. It staggers me how little preparation often goes into these scenes which are difficult and complicated. You think, "God, it's crazy. I've never met this person before and here I am having to work at how to do a whole performance on the set." It was great to have a few days of just talking to Michael [Caine] and Daniel [Barber] and thinking about the characters and the relationship between them before we started shooting.

I had friends at school, but I was never part of a gang and I dreamed of that sense of belonging to a group. You know, where people would call me 'Em' and shout across the bar, 'Em, what are you drinking?' after the show.

The ratings thing is the real issue. It really hurts movies. For example, in Redbelt, I smoked. The whole plot of my character was based on the fact that I was a smoker. And then they discovered that just by having someone smoking in the movie, it immediately makes the rating an R. So they had to cut out every shot where I had a cigarette in my hand and it totally affected the performance. That was very frustrating to David Mamet as well. I can remember him saying, "It's a nightmare."

51st State was one that I loved doing because the character was so out there, and in a way I was sad to leave the character behind. I'm afraid I could never be that cool in real life!

I decided to give acting a serious, committed try, and soon after, I read the script for 'Lovely and Amazing.' The story was beautiful and honest, and the characters struggled with the same insecurities many women - including me - face. I didn't think I had a chance in hell of being in the film, but I knew I had to go for it.

I did my homework and didn't go out much, and had a very highly developed kitsch fantasy life where I dreamed of being a dancing girl.