OCD, we discovered is a lot of different things-it's not just washing your hands, it's whatever you're obsessed with. It can be just the way you hold a pen, and you always have to have it a certain way or you have to eat your food, it depends. It's something that, as a character I thought was really interesting because sometimes it's used in a film where it is OCD and sometimes it's strategic.

My experience of test screenings is that you don't know what kind of mood people are going to be in, and sometimes the studios accept what Joe Blo says - and this guy could just be a frustrated filmmaker, or not paying attention.

Tupac Shakur is something that, of course I want to make the Tupac movie, I love Tupac, but when that movie was announced, we didn't even have a script yet. It was just being written. People announce things too soon. If you go to any filmmaker - Clint Eastwood, Oliver Stone, Martin Scorsese, Ben Affleck, Michael Mann - you go in their offices and there are scripts everywhere and there's about four or five of them you really want to make.

I'm a product of older filmmakers I guess, the past where you get to make movies and scenes are what they are. You know if you think about Scorsese back in the day when he was making Taxi Driver, or Coppola or Frankenheimer, Sidney Lumet, they're making films where you witness violence in a real way.

I've become friends with Michael Mann and Oliver Stone; I've seen those guys work and that was great to see.

I like being in real environments. I love being in the place that it's about - these sets and locations are characters in the movies. Can you imagine Breakfast at Tiffany's shot somewhere else? It's classic. Characters are part of storytelling; they're just as important as everything else.

You could call it that [urban Western], I guess, you could certainly call it that. A lot of these types of films are, really, if you get down to the core most suspense thrillers in this genre, the Western is sort of the birth of it all.