From the title and the subject matter – two uptown New York couples meeting to discuss what caused their children to fight – you'd expect an excrutiatingly painful dissection of middle-class mores. Roman Polanski handles his adaptation of Yasmin Reza's play with a little more guile than that: sure, things are said that shouldn't be, but the tone is more black comedy than Who's Afraid Of Virginia Wolf-style marital tragedy. Jodie Foster and John C Reilly play one couple, but it's Kate Winslet and Christopher Waltz as glossy, bickering Mr and Mrs Cowans who steal the show.