Right now, Broadway and Off-Broadway is full of good actors giving very good performances in slightly sub-par pieces of theatre. I make a few cautious exceptions here, as they are unlikely to appeal to all tastes.
Go see the MTC production of Brian Friel's Translations (Biltmore Theatre) in which the text and actors are marshalled by Garry Hynes as expertly as you would expect from her. But be prepared to share the theatre with disgruntled and bored New Yorkers, a number of whom will not survive to face the apparent ordeal of the second act. There is nothing difficult about this play, it is one of Friel's clearest works. But the simple suspension of disbelief which requires you to accept that everybody on stage is acting in English even if some of their characters are "speaking" in Irish, appears to flummox some, which will be all the more ironic to those of you who know the play.
Julianne Moore, Bill Nighy and Andrew Scott give fine performances The Vertical Hour (Music Box Theatre) but your enjoyment will depend on how highly you rate playwright David Hare. It is directed by Sam Mendes, which will entice some, though there's no compelling reason why it should in this instance.
Both major London imports, Kevin Spacey, Eve Best and Colm Meaney in Eugene O'Neill's A Moon For The Misbegotten and Peter Morgan's Frost/Nixon can be commended without reservation, but neither begins on Broadway until late March.
Of the long-running musicals, only The Drowsy Chaperone (Marquis Theatre) and The Color Purple (Broadway Theatre) are really now worth your time, but the revival of Sondheim and Furth's Company (Ethel Barrymore Theatre) continues the recent and welcome trend for productions of Sondheim's work which give full weight to the material. More interesting, however, are this season's two new musicals. Neither is an unalloyed classic, but both are well worth seeing if your idea of a good time at the theatre is to have at least some of your preconceptions challenged. Spring Awakening (Eugene O'Neill Theatre) is based on Frank Wedekind's 19th century play of sexual hypocrisy in Germany but now sports an original rock score which implicitly links with contemporary American culture wars. How you like the show will rather depend on whether you consider America's chronic reversal into infantilism worthy of your attention and you may also wonder, as I did, whether a play about sexual awakening among adolescents in which the principals all seem to be in their early twenties does more to perpetuate sexual hypocrisy than challenge it. Nevertheless, there is much to admire in the work and I am paying it another visit tomorrow to see if my hunch that it'll be even better the second time pays off.
But the surprise hit of the season, and the only show apart from the Friel that I can recommend more or less wholeheartedly, is Grey Gardens, (Walter Kerr Theatre) a new musical based upon the cult documentary film about the real-life story of society girl Edie Bouvier (aunt to Jackie Kennedy Onassis), once bethrothed to Joe Kennedy and on her way to First Lady-dom, but by then (1975) reduced to sharing a fairly squalid existence with a mutually-dependent mother and numerous feral cats. If this sounds a little too close to Whatever Happened To Baby Jane? for comfort, well, it perhaps is. But that thumbnail sketch does not take account of Christine Ebersole's extraordinary performance as both Edie and (in act one) her own mother. She has, with some justification, been unofficially crowned new Queen Of Broadway by both critics and theatregoers, but the Tony which will be hers merely for showing-up in June for the Awards will consolidate that title.

