Jackie Mason gives the performance of his lifetime in his farewell stand-up show from Broadway. An entire chapter in the history of American comedy is embodied by Jackie Mason, and there's nobody left alive who can do the cadences and rhythms of his aggressive Borsch-Belt style with such panache. Mason has pursued the Jewish joke with a tenacity and single'mindedness that exceed those of anyone else in show business. Even when he's talking politics, a Jewish joke is never far behind. Barack Obama? He "looks like a Jew with a tan." Bill Clinton? "Jews love him so much that if he shot a girl right here, Jews would say, 'Who lives forever?' Jews according to Mason, prefer coffee to cocktails and like to complain about the temperature in the room. The girls, he emphasized, aren't interested in oral sex, though "in an oral surgeon, maybe'