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.
I kept thinking, 'this must be the coolest job - I'd like to be a professional baseball player. ' They were getting paid to play a game, and what a cool lifestyle that was.