Seat Filler

 Cactus Flower
Grease 2’s Maxwell Caulfield is still a striking leading man, but it’s not enough to put the bloom on this stiff revival of the hit ’60s Broadway comedy — by How to Succeed cowriter Abe Burrows — about a rakish dentist who makes his attractive assistant pose as his wife to secure the affections of a much younger girlfriend. Skip it and Netflix the 1969 Goldie Hawn film version or even the looser Adam Sandler remake, Just Go With It.
Westside Theatre, through April 24. 

 Arcadia
With equal smarts and heart, this attractive but no-frills revival of Tom Stoppard’s intriguing 1993 masterpiece, which is set in an English country house in both the early 1800s and the present day, finds strange carnal beauty in the cerebral discussions of mathematical genius, literary criticism, and even landscape design with a winning cast that includes Raúl Esparza, Gossip Girl’s Margaret Colin, and an animated Billy Crudup.
Ethel Barrymore Theatre, through June 19.