If you haven't seen the Phoenix Neutrino Project yet, you're a stupid person.
The Neutrino Project is an improvised movie created by three troupes of improvisors right there in front of the audience. I could get into the details of how they do it, but I'd much rather just encourage you to go see it yourself. It's never the same, it's always entertaining, and it's honestly one of the most unique artistic experiences you'll ever be a part of.
And if the show itself isn't enough, hang around afterward. The cast is always lingering outside after each performance (usually slurping up a few beers), and they're very approachable and easy to interact with. If you ask one of them which one "likes melons" you'll have a new group of friends for life.
Anyway, if you get a chance, there's a show once a month at Space 55 in downtown Phoenix (7th street and Pierce). You should really check it out...I mean, you don't want to walk around your whole life being stupid.