Playing villains is very liberating because unlike the leading man, nothing is expected of you. Leading men have to look good, they have to behave in a certain way, they have to fulfill an audience's expectations. But as a bad guy, you have free license to take the audience by surprise. And that's what audiences want - they want unpredictability from their villains. The villain's job is to subvert it.
Alfred MolinaI think enjoying each other in a creative way is usually a result of when you're doing something that might be problematic - might be a little difficult to uncover. I've done it once in a stage production; we came in for two days and, just as an experiment, the director had us reading each other's roles. You hear another voice interpreting a line that maybe you were having trouble with. It can be very helpful. But we weren't really in the kind of situation where that was necessary.
Alfred Molina