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.

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.

I'm very happy to be a part of a very successful piece of art, as the 'Saw' films have been. One gets into this to participate. It's the coming together of a good story. So, that aspect of it has been just splendid. It really has nothing to do with me or my popularity. I'm fascinated.

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.

One of the interesting things about 'Saw' is that you don't find out about things in sequential or linear order. One of the things that fans have liked a lot is, we don't forget about details. They come back and reveal themselves as the story evolves.

One of the first speaking roles I had was in a film called 'Svengali', with Peter O'Toole and Elizabeth Ashley. I was a waiter, and I had about three lines. And I was ready! I had been around people like that, and I knew they were just actors. All the work I had done, it was all there, and I felt like I knew all the mechanics.

I try to think of acting in terms of thinking and doing. People think of it as, "Oh, let's get inside this guy." They think that acting is being, or feeling, or emoting. It's as much doing. One of the first things you do as an acting student is ask, "Can you say words and do a task at the same time, like sweep a floor?" You get to watch the human condition, and there's always a "doing" aspect of it. This couple, they're carrying backpacks, where are they going? Students? Or are they carrying instruments? It stimulates the imagination. So acting is doing ... and I forget how we got off on that.