What's My Line?
In 1980, Mark Goodson-Bill Todman Productions, creators of "What's My Line?", produced "That's My Line" which also highlighted the unusual occupations of ordinary people. However, the show was developed as a reality show and had no panel or game elements. "What's My Line?" announcer Johnny Olson was the announcer, and Bob Barker was the host for the show which ran for two seasons on CBS.
Fred Allen
A comedy series, "Fred Allen's Sketchbook," did not catch on. He landed a two-year stint as a panelist on the CBS quiz show "What's My Line?" from 1954 until his death in 1956 (March 17, 1956). Allen actually appeared as a Mystery Guest on "What's My Line?" on July 17, 1955, when he was taking a week off from the show to have an emergency appendectomy. Afterwards he joked about the operation: "It was an emergency. The doctor needed some money hurriedly."