In orthodox film-making, you never shoot sequentially - but with improv, obviously every move you make has a knock-on effect; it is a cumulative process. I have improvised, on the non-scripted 'Timecode.' It can become entirely indulgent: actors smashing crockery and competing verbally.

I play the guitar. This year at the Sundance film festival, I joined the band from 'The Guitar' on stage. We warmed up for Patti Smith, and then the director Michel Gondry got on the drums to play some songs from the soundtrack to his film Be Kind Rewind with Mos Def. It was pretty mad.

I like acting in London-not least because it means I can go home after the show every day, rather than being on location making a film.

It helps being from somewhere other than Hollywood, not having grown up with that sense of film-making. I really wasn't exposed to that as a young woman.

Part of me misses the days when we have four channels in England and we were all talking about everything all the time.

I'm not very good with stills. I get all twitchy.

In orthodox film-making, you never shoot sequentially - but with improv, obviously every move you make has a knock-on effect; it is a cumulative process. I have improvised, on the non-scripted 'Timecode.' It can become entirely indulgent: actors smashing crockery and competing verbally.