Former “Saturday Night Live” cast members, including Dana Carvey, Andy Samberg and Maya Rudolph, are back for this season’s election sketches.

Five decades ago, television had never seen anything like ‘SNL.’ Now it’s the bar for modern comedy—and the kind of rare institution that gets to reinvent itself every year.

Reitman’s “ Saturday Night ” captures the dress rehearsal and preparations before the lights and cameras reveal the show to the public. Scenes are separated by time just minutes apart, making the film terrifically captivating and anxiety-inducing.