I never play a villain that I don't have something I can either do or say so the audience sees there is something redeemable about them. In other words, I don't want to do evil for evil's sake. I don't want to do Jason slasher movies. There's no point in that.
Well, on a personal level, I would never want to take on a character who didn’t have some redeemable qualities. Even the worst of people, such as Michael Scott in The Office [Carell’s character in the US version of the Ricky Gervais sitcom], have some decent human qualities that you can latch onto.