I think it's important as a filmmaker, as any person working in the arts, that you've got to try new stuff and challenge yourself and take chances.

To me, watching a movie is like going to an amusement park. My worst fear is making a film that people don't think is a good ride.

I feel that so many sci-fi films and films in general have just become really dependent on and addicted to CGI, and that some of the big CGI films of the summer, you see these effects that look like crap. You don't know if you're watching a cartoon or something that's real. And I didn't want to fall into that trap. I really thought there was a way to use a lot of these old techniques to do some new and really neat stuff.

Animators have to live life 24 times as long as we do - every 24 frames of a second.

Also expressionistic filmmaking - making the audience feel like they were inside the characters' heads. And so we create all these different types of techniques to put the audience there.

I think it's my nature to try and make original content, and that's what I've done, is just try and approach things in an original way, and do things differently.

These wrestlers aren't organized. They have no union, no pension and no insurance. You meet wrestler after wrestler who sold out Madison Square Garden ten years ago, basically running on fumes today. There's a lot of drama there.