A Great, Silly Grin opens at the 1960 Edinburgh Festival, where a staggeringly inspired satirical revue called Beyond the Fringe startled a public steeped in the polite, bland banality of the 1950s. From there it is a short trip to the coffee bars of London, where the appearance of a scruffy yellow pamphlet calling itself Private Eye overturned the way Britons looked at their world. The apotheosis of the satire boom, and the progenitor of so...