They keep on coming, these screen-to-stage musical adaptations, noisy, bombastic, as unsubtle as juggernauts. The best of them offer up their uncomplicated entertainment with some pizazz; but Flashdance is a particularly vacuous example of the genre. You probably had to be female, and teetering on the edge of your teens, to enjoy Adrian Lyne’s critically derided film back in 1983 (I freely admit that I was, and I did): Tom Hedley and Joe Eszterhas’s screenplay is both shapeless and pointless. This new version, written by Hedley and Robert Cary and directed by Nikolai Foster, does nothing to improve upon it.

What's the Greek for "oy"? All the bouzouki dancing and retsina in the world wouldn't be enough to make a satisfying play out of Onassis, Martin Sherman's rewrite of his own Aristo, seen two years ago at Chichester with the same director (long-time Sherman collaborator Nancy Meckler) and absolutely invaluable leading man (Robert Lindsay). The star gives the piece his customary highly theatrical all, in the process making you think perhaps the material really is the stuff of genuine tragedy. But all the high-flown talk of "destiny" and whatnot can't shift what Onassis actually is - less a fully realised drama than a celebrity flow-chart on stage.

Many theatregoers will be familiar with Clifford Odets’ Awake and Sing! which was given a recent revival both in the West End and on Broadway, or film-goers with his screenplay for Sweet Smell of Success (1957). Some will know his backstage drama The Country Girl (written in 1950) from the 1954 film version starring Grace Kelly, playing opposite Bing Crosby and William Holden, for which she won an Oscar.

Why ironic? Because this is one fella whose bad temper risks isolating him altogether from human company - except that misery, we're told, loves companionship, in which case William's entire family is going down with the ship. Whether audiences will go along with that descent depends upon individual tolerance for the sort of person we all know exists but whom we tend to prefer in some sort of redemptive or at least linguistically vibrant dramatic presentation, not the doleful termagant on view here.

We are in Brooklyn in 1938 and Sylvia Gellburg, a middle-class Jewish housewife, is paralysed from the waist down. It’s a hysterical paralysis brought on by the shock of seeing newspaper pictures of the cruelty meted out to German Jews during the horrors of Kristallnacht (or the night of broken glass). She becomes obsessed with a picture of two elderly Jews forced to clean the pavement with toothbrushes - events several thousand miles away have caused the sudden numbing of her limbs. Or is it something else?

The National Theatre’s new production of Hamlet is both a very good Hamlet, yet also a somehow disappointing one. For a work so rich in possibilities, with so much emotion, so much superb and intricate engineering, it is often like this, in England or anywhere else - inspiring and unconvincing at once.

When Tony Harrison transposed his version of Molière’s The Misanthrope from the 17th century to the early 1970s, he managed with his characteristic and brilliant combination of savagery and wit to make the play feel totally contemporary. For Andrew Hilton’s new production at the Bristol Old Vic, Harrison has tweaked the play into the 21st century, with characters clutching iPhones and boasting of their connections with Sarkozy. Molière’s masterpiece is about human failings and the reason this classic makes us laugh today is because we recognise ourselves in the characters' parade of foibles.

When, earlier this year, Edward Hall took the reins at the Hampstead Theatre, some eyebrows were raised. It’s meant to be a new-writing theatre and Hall has had much more experience directing Shakespeare than in tackling new plays. On the other hand, this venue needed a clean sweep and Hall is certainly able to wield a new broom vigorously. His first show, Shelagh Stephenson’s thrilling play about the disappearance of a gap-year student, opened last night — and it’s an excellent debut.

Theatrical conceits, much like London buses, seem these days to come in threes. Or so it is suggested by the Neil Bartlett/Handspring collaboration Or You Could Kiss Me, the third Cottesloe production this year to peer into the future, albeit only as far as 2036, whereas Mike Bartlett's Earthquakes in London leapt forward to 2525. (Completing the trifecta: Tamsin Oglesby's Really Old, Like Forty Five, set a comparatively imminent 40 years ahead.) And while Oglesby's play featured a robotic nurse, this latest opening puts some very singular puppets centre-stage, alongside a vision of infirmity that could not be either more human - or humane.

The news last week that Michael Grandage will step down next year as artistic director of the Donmar Warehouse feels like one of those moments when an era ends. His ability to programme not only the small Donmar but also to bring excellent productions to the West End — notably Jude Law in Hamlet — is exemplified in the current mini-season at the Trafalgar Studios, which opened last night with American playwright Beau Willimon’s new play about the New Orleans floods of 2005.