I'm a character and relationship guy, and even with the 'Saw' films, it's special-effects people's jobs to create these scary things. It's not my job. My job is to bring some sense of humanity to the character, no matter how evil he may be. The script is going to take me there.

There are a lot of considerations that come into play when you craft one of these 'Saw' scripts, and there's only so much you can put into them.

In the the late seventies and early eighties, I played background roles in thirty movies... Woody Allen movies, Scorsese films, you name it. Whatever was being shot in New York, I was doing stand-in and background work because I wanted to be close to the camera; I wanted to see what was going on.

Horror fans are very passionate people, and they are very much into the 'Saw' thing. So they watch sometimes as carefully as the writers and producers do, in terms of the way the story plays out.

'Saw VI' has a really interesting theme about the ripple effect. Everything you do affects the guy next to you, which affects the guy next to him, which affects her over here. And you might think that what you're doing is not that significant, but just the way you respond to other people makes the world the way it is.

No matter what kind of significance leads you do, you learn a lot from doing schlock. The setup's the same, only you have to work twice as hard to make it the best as you can make it. And a lot of acting is not about acting but technology. Are you standing in your light? Are you out of your light? And if the sound guy's near you, please don't put the coffee cup down at that moment, because you're covering your lines. All of that stuff's going on in your head, so you learn a lot by doing whatever. In my view, never worry that something's not prime - A, number - one stuff.

Saw has been a unique experience in that Ive had the opportunity to work with some really great artists, and everyone has contributed in so many different ways, in all of the different departments of a film crew.