Few family members are spared in this enjoyable if lightweight diversion, loosely assembled around the idea that our nearest and dearest can do us wrong in infinitely inventive ways. Husbands and wives, aunts and uncles, stepfathers and even unofficial family members like the rabbi and the therapist take plenty of hits too.
Old-fashioned boulevard comedy — bright, easygoing fare that doesn’t require the deciphering of plummy or crummy British accents — has more or less evaporated from the Broadway marketplace since the heyday of Neil Simon. “Relatively Speaking” brings back this once-popular genre in manageable bite-size portions, provided by starry showbiz names who sometimes seem to be channeling Mr. Simon’s gag-driven style.
These plays are not going to do anything much in the way of reputation burnishing for their three celebrated authors — and certainly none is required — but they are packed with nifty zingers and have been directed by John Turturro with a boisterous flair for socking home the borscht-belt humor.