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.
What's My Line?
"What's My Line?" was a guessing game in which the four panelists attempted to determine the occupation ("i.e.", "line [of work]") of a guest. In the case of the famous mystery guest each week, the panel sought to determine the identity of the contestant. Panelists were required to probe by asking only yes-no questions. A typical episode featured two standard rounds (sometimes a third, and very rarely a rushed fourth) plus one mystery guest round. On the occasions on which there were two mystery guests, the first would usually appear as the first contestant.