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.
Melina Mercouri
On 8 October 1962, Mercouri appeared on the American TV show "What's My Line". After the panel were blindfolded, a strange man appeared on-stage and proclaimed himself "the second mystery guest". Host John Charles Daly quickly called for "the relieving unit" and said "schedule two" (a coded phrase used on live broadcasts in case of an emergency: the cameras are turned to a neutral position and the sound is cut off). The man talked a bit about a dating service he apparently owned before being hustled off the stage by announcer Johnny Olson and executive producer Gil Fates. Daly apologized to the panel and the program continued.