It sounded a dry subject and a dry title for Alan Bennett’s first play for five years - a fictional meeting between composer Benjamin Britten and poet W H Auden 25 years after they fell out, two old buggers, one furtive, the other extrovert. But at last night's premiere The Habit of Art proved an excruciatingly funny play, ribald, merciless, and as much about the bad habit of Theatre as that of the higher-toned Art. Nicholas Hytner has given it a wildly enjoyable production at the National Theatre that fields some epic comic performances in a bravura script.

Reviving rarely performed plays is a high-risk strategy. On the one hand, there’s the chance of discovering a forgotten gem; on the other, there may be good reasons for the play being rarely performed. Nigel Dennis’s The Making of Moo was first staged at the Royal Court in 1957 with a cast that included Joan Plowright, John Osborne and George Devine, and provoked accusations of blasphemy. How has this satire on religion stood the test of time?

David Hare (b. 1947) has had three distinct phases to his career as a playwright. In the 1970s he was a satirist of the agitprop movement whose plays (Slag, Knuckle) smacked of youthful belligerence.

Theatre is the art of storytelling, and the best stories are those that constantly change their shape. In Dennis Kelly's storming new play, Orphans, which wowed critics and audiences when it opened in Edinburgh in August, the narrative morphs and flips like a bad conscience. And for good reason. Long before the final climax, you just know that something isn't right.

Behold the gleaming dark. At one point in this spirited and imaginative revival of Philip Ridley's 1992 play, The Fastest Clock in the Universe, one of the characters says, "We're all as bad as each other. All hungry little cannibals at our own cannibal party. So fuck the milk of human kindness and welcome to the abattoir!" Yes, well. As welcomes go, this is about as pleasant as a razor blade hidden in a cupcake - and perfectly apt for this sharp slice of East End gothic.

Richard Bean's monster mainstage play, England People Very Nice, was about immigration to London's East End - and was easily the most controversial play of 2009. He is a son of Hull (b. 1956). He is one of the most prolific and talented playwrights to emerge on the British new writing scene since the start of the new millennium.