John Charles Daly
Daly's first foray into television was as a panelist on the game show "Celebrity Time". This led to a job in 1950 as the host and moderator on a new panel show produced by Goodson–Todman, "What's My Line?" The show lasted 17 years with Daly hosting all but four episodes of the weekly series.
What's My Line?
Johnny Olson continued as announcer until 1972 when he departed for California, after which a succession of guest announcers were used including Wayne Howell, Dennis Wholey, Bob Williams, Jack Haskell, and Chet Gould, with Gould eventually taking over full-time in early 1973.