Lemmings (National Lampoon)

Woodstock in the eyes of National Lampoon (1973).
National Lampoon: Lemmings, a spinoff of the humor magazine National Lampoon, was a 1973 stage show that helped launch the performing careers of John Belushi, Christopher Guest, and Chevy Chase. The show was co-written and co-directed by a number of people including Sean Kelly. The show opened at The Village Gate on January 25, 1973, and ran for 350 performances.