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.

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's more going back into, I've always been really interested in the MKULTRA program and some of the programs and the fact that we really tried to create an actual, I guess you could call it an energy force of yourself. And you know, there were test subjects that were killed during the process. It have a huge ordeal, this huge congressional hearing that shut the whole thing down.

It was practically with people with strings. There was no CG involved, it was just painfully taking Collin [Farrell] and Jessica Biel and putting them upside-down, we built the set upside-down and just try to twist perspective to make it all seem like zero gravity. And it was one of the most difficult things I've ever shot.

Science fiction is an extension of science.

The class warfare was in the script as well. It establishes what the world is like and what would happen if we really had two zones that were left and everybody had to survive using these two areas. What would our society to do with that set up? I wanted the state of world, in my mind, how it would actually realistically unfold. I drew that from what was in the script.

I'm not a crazy horror fan. At that time i wasn't really looking to do something like that. But I thought to put a twist on it to put a werewolf versus vampire... 'What's the best opponent for a werewolf?' Became the idea of vampires and what about putting those two together? And ultimately it got turned down. But we loved the idea and shopped it around.