Cinema: Little Boy Lost and Found BIG

Hollywood loves a gimmick -- and too often loves it to death. One year there are three movies about gallant farm women battling fate and fortune; the next it's comic-book heroes saving the world or muscle-bound hulks trying to write a different ending to the war in Viet Nam. This year's flavor is a gentle fantasy about body switching: the young and old changing places with supposedly comic results. But 18 Again!, Vice Versa and Like Father, Like Son were more frantic than comic, and it remains for Big, the last out of the gate, to show that this season's gimmick...