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?

At first glance, verbatim theatre is a total bore. This form of drama, which collects the words spoken by real individuals and puts them into the mouths of actors, has been a central plank of the rebirth of political theatre since 9/11, but its pleasures tend to be cerebral rather than visceral, moral rather than physical. Attending a verbatim theatre event - such as Out Of Joint's latest show, Mixed Up North - usually makes you feel good as a citizen rather than as a person. You feel worthy, but don’t usually have much fun.

Don't be put off by the deliberately dim interior that first greets you at Mrs Klein, the Nicholas Wright play that has been scorchingly revived at the Almeida Theatre by the director Thea  Sharrock and a cast including Clare Higgins in her third stand-out performance on the London stage this year. Those who feel as if they've had enough theatrical psychiatry-speak from the Almeida courtesy of that venue's recent revival of Duet For One, think again: a play that can emerge (and has) as too portentous by half reappears with a wry spring in its step and an emotional sting that is sure to land, whether or not you have spent time on the proverbial couch.

Dateline: Vienna, 1923. In a boarding house, seven young people - most of whom are medical students - find the air of the former Austro-Hungarian Empire’s capital city a heady mix of the sexually invigorating and the morally asphyxiating. At the opening last night of Ferdinand Bruckner's rarely performed play, Pains of Youth, there were moments when the event felt as if Egon Schiele was meeting Sigmund Freud at a madhouse performance of La Ronde.

When the Royal Shakespeare Company asked Roy Williams to write something with Much Ado About Nothing as his inspiration, he didn’t merely update the romantic comedy. Rather he took some characters and plotlines and cleverly wove them into Days of Significance, a shocking and powerful play about the Iraq war, which was staged at Stratford-upon-Avon in 2007. This touring version, which I saw at Northern Stage in Newcastle-upon-Tyne, has some of the original cast and is again directed by Maria Aberg in a thrilling, visceral production.

Family life can be bad for your health. Especially if you are an overweight teenager. Take Anna for example. She's 15, a bit on the plump side, and having a rough time. At school, where - horror of horrors - her Mum is a teacher, she's attracted the attention of some bullies. But worse than unwelcome attention is neglect: her Dad is too busy writing a book about saving the planet from climate change to pay much attention to his daughter, or his wife. But help is on its way. 

It’s a big ask for any performer to take on a role that was written specially for another actor, but Diana Vickers’ supporters from her appearances in last year’s X Factor on ITV will be pleased to learn that she acquits herself very well indeed. She is Little Voice in Terry Johnson’s pleasing revival of Jim Cartwright’s The Rise and Fall of Little Voice, which began life in the National’s Cottesloe Theatre in 1992 with Jane Horrocks in the title role.