Jason Reitman and Gil Kenan conducted an extensive series of interviews with the living cast, writers and crew of the first-ever episode of Saturday Night Live, which aired on October 11, 1975 on NBC and has been going ever since. The result of their efforts is Sony Pictures’ upcoming Saturday Night, a movie retelling the story of that night.

Related: Every ‘SNL’ Cast Member Over the Years Since 1975

The pic formerly known as SNL 1975, which Reitman and Kenan co-wrote and which Reitman is directing, tells the chaotic behind-the-scenes story of what happened that first night, just before the live cameras clicked on to launch a late-night institution and a slew of eventual stars among the young, mostly unknown troupe of comedians including John Belushi, Dan Aykroyd, Chevy Chase and Gilda Radner, all under the watchful eye of creator Lorne Michaels.

Some of the fun with Saturday Night is following as the...