Producing live television is a tough gig. Producing live television in the mid-70s with an inexperienced cast, a crew on the verge of revolt, and a network with their finger on the cancel button is even tougher. That's the backstory of Jason Reitman's crackingly chaotic and hugely enjoyable Saturday Night; a wild look at the backstage mayhem surrounding the very first broadcast of iconic late-night show, Saturday Night Live. Led by one of this year's best acting ensembles and Reitman's firecracker of a screenplay, it's a brilliantly constructed look...