Synaesthesia is a tricky beast. It’s basically a neurological condition which condemns those afflicted with it to a life in which words evoke colours, and emotions can be experienced as colour. Sometimes it is almost playful, with the mere names of the days of the week evoking tonal sensations; at other times it is intensely painful, with the mere glimpse of a buzzy pattern causing dizziness or strong feelings conjuring up great blasts of colour, an unbearable onslaught of confusion and derangement.

The Russians have always been good at writers' houses. The Soviets especially. When I first saw Tolstoy's house his blue smock was hanging behind the door, a manuscript was on his desk but the chair pushed back as if he'd nipped out for a moment and would be back. It was a frankly theatrical effect and the better for it. Like Tolstoy’s, Chekhov's two houses - one in Melikhovo near Moscow and the other in Yalta in the south - were well funded and maintained and imaginatively presented in those days. Only the last is true now.

In a life so short it is always a shock to remember the fact. Chekhov lost more friends than most people do by 60, but he has gained hundreds of thousands who love that fugitive figure, its guardedly attentive attitude, the merciless word in the right place, the moral force lightly carried: one thinks of him in the most unexpected corners of life.

She’s the most famous young pout in Hollywood. And her first West End appearance has already sparked a media frenzy, making this contemporary version of Molière’s The Misanthrope the hottest ticket in town, with massive advance bookings already guaranteeing anyone associated with the show a credit-crunch-proof Christmas. Of course, I’m talking about Keira Knightley – I mean, who isn’t? But what about the play, which opened last night with a barrage of paparazzi flashbulbs?

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.