Comic books, if you're adapting a comic book - like X-Men, for example - you've got 40 years of amazing stories to dig into, things that incredible artists have been thinking about for decades.

Zombies - obviously they're doing it in a much more expansive way on The Walking Dead - basically, what you used to do is you put a bunch of goo on an actor and have them shamble towards you, and it's a very effective creature. It always has tremendous impact, just that feeling of death coming for you; that's universally accepted.

A vampire is very easy; you just take a very good-looking actor, put some teeth on them, make them pale, and you're there.

I was beating Amanda Lim to death with the tire iron, I accidently hit her in the finger. It was a fake tire iron, but it was run through with metal in the middle and when she looked up after the take, she was crying and it really hurt her and so I felt pretty terrible about that, but they got back at me when I had my big fight with Casey at the end and she just beat the bejesus out of me, being the amazing stuntwoman that she is.

On the lower budget pictures, you go overtime more, you're sort of scrambling for the shots and cobbling together more ideas at the end.

The most challenging work is producing. The physical act of getting a production up and running is extremely taxing, and you never have any guarantee that your years of work on any given project will ever bear fruit.

While the storytelling in games is getting so much better, you look at something like Grand Theft Auto V, which I thought was really beautifully written, it doesn't really need a movie because it is a movie. So I think you need a unique game - you either need an incredibly talented writer and director to come in and put together an amazing vision, or you need a game like Metal Gear, which is very cinematic, has a huge amount of history behind it, but whose cinematic experience is very different from what you'd get in a theater.