Rolling Stone magazine reports "Live From New York!", a documentary about the 40-year history of Saturday Night Live, will kick off the Tribeca Film Festival on April 14th. From the article: "Directed by Bao Nguyen, the film combines archival footage and interviews with beloved SNL cast members, hosts, crew members as well as journalists, politicians and others who have been influenced by the sketch comedy show."
Answer to the trivia question: Bill Murray is the only one in the photo who wasn't part of the original cast. He did not officially join SNL until its second season.