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.
Arlene Dahl
Dahl was both a mystery guest (April 25, 1954) and a panelist on the CBS game show "What's My Line?". In 1953, she hosted ABC's anthology series "The Pepsi-Cola Playhouse".