Carnage (2011)

Set in one evening in a New York apartment, Carnage features two couples rowing over an incident between their children. Directed by Roman Polanski, the real-time scenario works (it’s adapted from a play by Yasmina Reza) and the disintegration of relationships and social niceties is handled with ruthless precision. Not one of the four characters is likeable, so you move beyond feelings of “taking sides” to a realisation that the whole lot of them are self-centred and childish. It’s filmed in such a way that the slightly queasy angles cleverly emphasise their grotesque qualities as the tension escalates. It’s brilliantly twitchy and uncomfortable.

There’s an especially memorable scene in which a hair-dryer is used to dry Jodie Foster’s precious art catalogue after it becomes splattered with Kate Winslet’s vomit. You might think that would be the low point for the characters, but things continue to get worse.