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.

I remember once, I read in a horoscope, because I'm an Aries, I read this terrible thing, which really affected me, which said, "You will never be original. You will always be an interpreter." (Laughs) I thought, "Oh my God." You know, I had to live with that on my back for [all my life].

I'd already started directing short films when we were doing 'Lord of the Rings,' then videogame projects. So Peter's known that I've been heading towards directing for a long time. But I always thought my first outing would be a couple of people and a digital camera in the back streets of London somewhere!

We've never had nannies. We've had great grandparents, great support from family, and the kids have been on every set: they've seen me play Gollum, King Kong, Captain Haddock, the lot. They totally get it, and they want to go into the business. Ruby, my daughter, is very keen to become an actress.

What you can do with visual effects is enhance the look of the character, but the actual integrity of the emotional performance and the way the character's facial expressions work, that is what is going to be created on the day with other actors and the director.

In a personal way, to do with family and the father-son relationship, in a kind of artistic way with regard to him being an art student. I also studied the visual arts at Lancaster University. I then decided to become an actor as he was becoming a musician. And then as an actor/performer, we have similar sort of interests - music hall and that whole world. So, there's a lot that I felt connected with.

Yeah, I mean, climbing's always been a massive hobby of mine up until, kind of, recent times when I've had family, but no, it's been a driving passion in my life and, uh, I've always wanted to climb the Matterhorn. It was the mountain that, sort of, inspired me to climb, as a youngster. So, it was great to be able to get to do it.