A lot of people don't put the numbers together correctly. But Underworld, honestly, the way it came about - the real way it came about - I took a meeting with Dimension, and they were looking to do just a werewolf movie, and I wasn't too interested in doing just a werewolf movie.

With Die Hard it was just something that I, you know, I grew up with those movies. I made a Die Hard movie with my friends in my backyard during high school. It was terrible.

I love helicopters. In fact, my wife and my friends, the myth of the chopper in the sky is that Len's going to stop and look at it. I love, probably, destroying them, yes. You know, It's the big elements, the big toys, the trucks the helicopters, and things like that. You have a few tools to play with.

It was Die Hard in my father's workshop. And so when that opportunity came up, the possibility of doing it, it's more the teenager in me who says that, 'I have to, of course I'm going to.' So that's the fun of reinventing, or just getting involved in things that really, actually loved as a kid growing up wanting to grow up to be a director.

The three-breasted woman was very much at the top of my list in [original 'Total recall']. Like I said, I was fourteen! I remember Arnold [Schwarzenegger] pulling that big tracker out of his nose and freaking out about that. I remember going through the immigration booth where their face splits open with that heavyset redheaded lady. So there were a lot of these little moments that I remember.

I really thought the process and what I'm used to doing on film would be different. I thought that because I wouldn't have the same amount of time, I wouldn't do all of the tracks that I like to do or the lighting that it takes. And then, I got there and realized that I don't know any other way. I just do all that stuff really, really fast and under a lot of stress.

Science fiction is an extension of science.