Uta Hagen would say, there's the representational actor and the presentational actor.

I think that the idea of boundaries is being challenged everywhere. And I think our fascination with sci-fi is that it is a boundary-less world where we can kind of create the reality that we believe to be as opposed to the reality that is. It is about the beyond and the unknown in a different way than pretty much any type of storytelling is.

Working with Jim Sheridan for instance, we did this movie Brothers. Jim will ask anybody - we'll get a delivery on set, and like the poor delivery guy will be like, "Here's your pizza," and he'll be like, "Come over here. Come here. I want to ask you a question. Do you think this is real? What do you think? Should we do another take?" And they're like, "I, uh, you want your pizza?" There's no shame in everybody's ideas. There's no shame in somebody not knowing.

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.

Working with Robert, Robert [Elswit] is a storyteller. He's not a cinematographer, he's a storyteller. And to me, that's the graduation I hope to get to in my profession. That I'm not just an actor, I'm a storyteller. And I think that takes a long time in, when you have one job on a movie set. Makeup artists, actor, whatever. To graduate from just that to storyteller.

We are all from different cultures. Heath's [Ledger] Australian, really. I'm from here. Ang's [Lee] from China. But I think Ang gets very close in preproduction and rehearsals. And then he allows his actors - I don't think scared of actors, but I think he's scared of getting in on the scenes he's watching. The space he's watching. So he just totally disconnects from you while you're shooting.

Ang [Lee] gave us a lot of books about cowboys who had been gay or stories about it and all that stuff. And I just talked to a lot of my friends - who [was] their first, particularly same-sex, first situation. That was fascinating to me - trying to learn what that was in a certain period of time. Certain age. The secrecy involved in it. All those things.