The Brave New Workshop was the nation’s first home of improvisational theater, but it wasn’t until the founding of Improv-a-Go-Go — 8 pm every Sunday — that Minneapolis began to develop a scene around that improv. 3-Minute Egg attended the 7th anniversary show of Improv-a-Go-Go this past Sunday and spoke with its founder, Butch Roy, about the series’ impact on the local improv scene.