Flipped

A ’50s coming-of-age ditty filmed through rose-colored baby-boomer bifocals, Rob Reiner’s homage to first love deals in generic clichés. But though the dialogue rings too chirpy (“Gee whiz!”) and faintly anachronistic (“Get over it, man!”), the acting is wonderfully subtle, especially John Mahoney’s turn as a grimly clear-eyed grandfather.