Improvisation in general is good, and improvising material into themes, turning the material into something codified and repeatable, taught me scenic structure and dramatic gambits that work and things that are appealing both as a performer and an audience member, like you know, what does "want" really mean in a scene, and how do you achieve your want, and how is that expressed, and how do you achieve closure? Those are all things that I learned performing at the cabaret after just doing the same scenes over and over and over again over the years, with my own ability to change.