Directed by Olivia Wilde, and boasting a script by four screenwriters who evidently contributed about 50 superb jokes apiece, the high-school comedy Booksmart is like Scorsese's After Hours without the menace; Superbad without the sexual obsession; Dazed & Confused without the hangover. It is, in other words, utterly delightful – a riotous, warmhearted, unexpectedly wise meditation on growing up that's also cheeky and confident enough to score laughs via condom water balloons and a stuffed panda employed as a sex toy.