Saturday Night would make for a very solid double-bill with a Muppets movie. And not just because there are Muppets in it — well, primitive Muppets, at least, in the form of early Jim Henson creations King Ploobis and Vazh. Because much like one of Kermit and co’s capers, it’s all about putting on a show, and how much stress, anxiety and arm-flapping goes into playing music and lighting lights. At the centre of Jason Reitman’s movie, essentially playing the role of the frog, is the cardigan-wearing Lorne Michaels (Gabriel Labelle), young Canadian TV producer and wannabe revolutionary of the medium. He’s the sensible one. Around him swirls chaos, in many forms. There’s even an Animal stand-in, in the burly shape of John Belushi (Matt Wood), cocaine appreciator and walking tornado.

This is, however, far from family viewing. NBC’s sketch-comedy series Saturday Night Live (known...