When Jack Benny came down with pneumonia in the spring of 1943 and he had to miss a month of shows, an unlikely guest host stepped in to fill his shoes. For four episodes, Orson Welles poked fun at himself and joined in the jokes with Benny's gang - Mary, Phil, Dennis, Don, and Rochester - and showed off his comedy chops on one of the funniest shows of the era. We'll hear all four of those broadcasts from The Grape Nuts and Grape Nuts Flakes Program (originally aired on NBC on March 14, March 21, March 28, and April 4, 1943).