You have formal rehearsal, a lot of things you don't have in movies - which is, you have to formally rehearse. You have to know your back story, discuss it, and almost everybody onstage has to know each other's [story], so that when it comes time to actually do it, you can throw it all away. That's the way I like to - and I didn't realize until very recently - that's the way I like to prepare for movies.

I know exactly what that movie's [Brokeback mountain] about. I can't define it; it doesn't tie up in a perfect bow. But it's about adolescence. It's about what it feels like - this isn't meant as a criticism, but like things I didn't relate to, which were high school movies. Where I'd watch it and I'd be like, "Well, am I like the kid that nobody likes? Or am I like the person who everybody [likes]?" I couldn't [tell]. I was like quantifying, putting me in a box. "This is my personality at that age" and "I'm this kind of person" just felt like bullshit to me.

To me Donnie Darko was about adolescence. And about how, as soon as you start to grow up and you sort of move out into the world, you realize everything is so trippy. That anything can be anything.

I don't think I had any idea at the time how to work with someone as masterful as he is. And I don't think at the time I really understood what was happening. I think I was in a space where I was like: there are all these things. I was shooting all these takes with David, and I was just confused, as a person, and as an actor feeling a little too big for my britches and that this thing was happening and then also not having enough skill yet, and technique to know exactly where I was, and know about the character.

As an actor, I feel like I'm somebody who, when somebody gives me a mark, I don't want to hit it. I don't like that. But then, without even knowing it, I just hit it.

To me I just, I'm a geek when it comes to cinematographers . And when it comes to Robert and when it comes to someone like Roger Deakins who shot Prisoners and he shot Jarhead.

I walk around thinking job to job, trying to not have regrets.