Everything I've made - it doesn't mean they've all been good - but everything I've made so far, big or little, fiction or documentary, has been something that I've been really enthusiastic about.

I also feel that the only thing more gratifying than working with someone who you've worked well with is working with someone new and coming up with something great.

I love the idea of documentaries. I love seeing documentaries, and I love making them. Documentaries are incredibly easy to shoot. The ease with which you can hear something's going on, somebody's going to be somewhere: That sounds so interesting. Pick up your camera and go.

Extraordinary people are the Green Berets and the Navy Seals and the Olympic athletes - these are the ones who can face these extraordinary physical challenges and be triumphant.

It's such a rich experience when you enter into a subject from a documentary point of view. It's hard for fiction to compete with that.

Documentaries - my God, there is so much going on in our country and in the world today that every time you open the newspaper or turn on the radio or watch the news on TV there is another documentary subject. We're getting the headlines for a second, shaped by corporate delivery most of the time, but what's really the story there?

I felt from time to time that shooting live music is the most purely cinematic thing you can do. Ideally, the cinema is becoming one with the music. There is little artifice involved. There's no acting. I love it.