A vulgar, worse dull, rerun of the talk-show-and-tell-everything activities of Maxwell Irwin Lefkowitz (""nom d'air""--Maxwell Irwin) from radio beginnings in Annapolis to big prime time in New York. With it at no extra charge there's a little history of radio and television, be it game shows or the Kennedy assassination, and probably some of Leonard's own for-real beginnings before he became host of NBC's ""Grandstand."" Well Maxwell Irwin ne Lefkowitz is a great loxsmith (he's from the Bronx), jokesmith (""Why, did her nipples run out of air?"") and cocksmith--many girls, including Sylvia whom he marries briefly, Amy whom he delays marrying. Finally he has his own talk show with Urbancasters. Telemedia blat.