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.

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.

Any documentary; any capturing of a non-fiction event, is a hyper-realistic condensation of reality that hopefully reveals an emotional truth. It's never the actual literal truth of an event.

I felt like the universe was tapping me on the shoulder saying, "You're the guy who has to tell this story because nobody else is."

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

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.

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.