I don`t know the facts surrounding Andrew Jarecki`s work. I think it`s a triumph of television. But it does raise troubling issues that I think we as a documentary community, you know, need to address.

Life is much more complex than the black-and-white sound bites that you get on television. There are nuances and shades of gray.

The Metallica film was like this incredible life experience where I learned the most through guys that stereotypically you would think couldn't offer much to you. That's what I love about the film: It explodes your stereotype of them - they're not just a bunch of lugheads banging on the guitar.

I'm an observer in life, not a participant. That's why I'm a documentarian who looks through a camera. I'm not a touchy-feely person; I'm not a seminar person.

I like to blow up stereotypes, like taking the icons of metal, the epitome of male testosterone and showing them as regular people.

My attitude is, I am not a lawyer; I am not a doctor; I am not a scientist. I am a filmmaker and I want to present what each side is saying and let the viewer come to their own conclusion.

I actually have come to believe that if people were more connected to their fellow human beings, if we all felt more centred and fulfilled in our lives, maybe we would be pointing our cameras at a lot less social ills.