What's My Line? is a weekly panel game show, which ran from 1950 to 1967, whose objective was to guess the unusual occupations of contestants. It is the longest-running game show in the history of prime time network television. Hosted by John Charles Daly and with panelists Dorothy Kilgallen, Arlene Francis and Bennett Cerf, What's My Line? won three Emmy Awards for "Best Quiz or Audience Participation Show," in 1952, 1953 and 1958 and Golden Globe for Best TV Show in 1962.
WHAT'S MY LINE? by Wikipedia