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.

If you're doing a music film, you've got to be singing about something. Or, you have to be singing in a vocabulary that has tremendous appeal or else people are not going to want to sit there for eighty or ninety minutes hearing this stuff.

I love doing fiction. I love doing performance films and I love doing documentaries that don't have music. I love to shoot and I love to shoot things I'm enthusiastic about.

It's a funny thing with documentary films - you want them to feel as entertaining and as gripping as a fictional film. With a fictional film you want it to feel as realistic as a documentary film.

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.

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.

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.