Moe Berg, Boston Red Sox catcher, had a quick mind and a vast store of general knowledge (and later became a spy, searching out atomic secrets for the OSS in Europe). Harpo Marx appeared without speaking, whistling his way riotously through the program. Fred Allen took over the show, relegating Fadiman to a panelist's chair. Wendell Willkie did the same. Deems Taylor was a regular fill-in, appearing no less than 30 times.