It's a really unique situation where you just - you make independent films or you make big blockbuster movies, but it's very rare when all of those ingredients come together, and you can really tell a story that you care about with a character you absolutely love with the people you love making movies with.

I remember kind of doing early acting and thinking, "God, they don't paint behind the sets." It's a bit of a shame, really - "Oh, what's on the other side of this wall? Oh, you can see the plywood." I was really disappointed. I just thought that these things were real, from watching things as a kid.

Acting is a sort of pressure cooker that allows the fizz to come out the top. God knows what I'd be like if I didn't have that.

When I played Gollum in 'Lord of the Rings,' if I was climbing up the side of a mountain, which I physically did, you know, I was on every single occasion swimming through streams, all of that, that wasn't captured. That was filmed on 35 millimeter, and for certain of those shots, it was rotoscoped and painted over.

I'm definitely moving more towards directing now.

Animators do amazing working translating and interpolating the characters [in the Planet of the apes], the facial performances. What we're creating on set - if you don't get it on the day, in the moment, on set, in front of the camera, with the director and the actors. The emotional content of the scene and the acting choices.

That's what I think is the biggest challenge, is just being still and learning how to just be present in that stillness and not over do it, not over act.