Improv is not something I had a lot of experience with, because for a long time, my only experience in front of a camera was all television, which is pretty rigid script-wise, except for the occasional scene where you toss in an ad-lib just to elongate something. Like, say, you're walking down a hall and you just don't have enough dialogue, and you throw in something. But you don't really have time to do other than what's written. It's very rigid. Shows have a certain rhythm that nobody wants disturbed.
Gary ColePart of you wants to look over at the people watching and say, "Not bad, huh? Me and Clint Eastwood." But you have to get past that and just be an actor.
Gary Cole