 A format of rotating guest hosts was implemented, employing some of the leading figures in the U.S. entertainment industry at the time, including Rock Hudson, Lorne Greene, George Burns, Dinah Shore and Woody Allen.In 1968, the practice of regular hosts was reinstated, with programs starring, in succession, country singer Eddy Arnold, John Davidson (again) and Ed McMahon.Arnold's programs all featured an appearance by comedian/impressionist John Byner, and Mark Andrews.