Second films are, you know, like 'difficult second albums', so it's a tricky position to be in but I think he's made a highly accomplished film.

At the moment, my trajectory isn't to think about acting. I'm absolutely devoted to The Imaginarium, our projects and directing. And watching and enabling other actors do their thing in our studio is hugely rewarding. I expect at some point I'll probably want to go back on stage and do some theater, because I've not done theater in 10 years.

And 'Sex Drugs Rock Roll' was a very transitional film for me in that I was one of the producers and you know, came up with the idea with the writer and the producer, as well. But, it was a very collaborative event. You know, I really love working in that way.

Motion capture is exactly what it says: it's physical moves, whereas performance capture is the entire performance - including your facial performance. If you're doing, say, martial arts for a video game, that is motion capture. This is basically another way of recording an actor's performance: audio, facial and physical.

My sons have to learn that you take the rough with the smooth and they've seen a lot of smooth in the years that they've been around. They didn't see the early years. But both my mum and myself are actors and we constantly tell them it's not easy. But they understand that.

After 'Kong,' my knuckles have never recovered because I had to wear very heavy weights on my forearms and around my hips and ankles to get the sense of size and scale of the movement of the character You are telling your body that you are these things and that you're feeling these thoughts and that you're experiencing these experiences.

What's wonderful about Tolkien and Shakespeare is that they show up your own individual microscope. They're so infinitely vast. You can reinterpret them in so many ways. Each age will have its own resonance with Lord of the Rings.