On its thirtieth anniversary, Steven Spielberg's UFO masterpiece, CLOSE ENCOUNTERS OF THE THIRD KIND (1977), seems as fresh and wondrous as a child's birthday present.  UFO's appear in the night skies over Indiana and kidnap little Cary Guffey.  His poor mom, Melinda Dillon, has no idea that the aliens are friendly.  Richard Dreyfuss sees the sightings also and all but ignores wife Teri Garr to follow them all over Indiana in a truck.  After Dreyfuss makes a giant mountain of earth in his living room without knowing why, Garr takes their son and leaves him.  But he's too busy trying to figure out what obsesses him about the mountain.