THE JACK WEBB SHOW, madcap comedy-variety. BROADCAST HISTORY: Spring 1946, ABC West Coast, from KGO, San Francisco. 30m, Wednesdays at 9:30 Pacific time, premiering March 20. This insane bit of fluff was one of Jack Webb's earliest efforts, so out of character for the man who created Dragnet and airing three years before that landmark police show.