With the help of director Chris Terrio, Amy Fox adapts her own play about crisscrossing sex lives in Manhattan, mainly within a theater-and-art milieu. This is brisk and fun to watch, thanks to the actors (including Glenn Close, Elizabeth Banks, James Marsden, Jesse Bradford, Isabella Rossellini, and George Segal in a swell bit as an avuncular rabbi). But once you catch the main drift of the plot, it becomes awfully ho-hum. R, 93 min. (JR)