Meteor Shower
Steve Martin's old/new wonderful comedy, "Meteor Shower," is about two California couples getting together for the first time--again, and again, and again. Like "Groundhog Day," it keeps starting all over again, with ensuing variations. And in the course of its brief, 80-minute, intermission-less duration, the couples have exchanged more than just words and ideas. By the end, they seem to have exchanged their persona…