Three New York couplesa young Wall Street broker (Robert Sean Leonard) and a child psychologist (Mary Stuart Masterson), a toy manufacturer (Ron Silver) and his upper-crust second wife (Cybill Shepherd), and a welfare worker (Beau Bridges) and his politically committed wife (Stockard Channing)wind up on a school committee helping to prepare a pageant on the theme of the 60s. Janet Kovalcik’s plot-heavy and programmatic screenplay bristles with implausible premises, and the deadly Arthur Hiller is not the sort of director who can make up the difference with style. Each couple experiences a crisis that is resolved Hollywood-style, and the fact that these six people quickly overcome their differences in age, class, and politics to become steadfast friends remains hard to swallow. But some of the performancesespecially by Channing and Bridgesgive this a modicum of feeling, at least until the climactic 60s pageant. (JR)