From Wikipedia:

    What's My Line? is a weekly panel game show, which originally ran in the United States from 1950 to 1967 with several international versions and subsequent U.S. revivals. The game tasked celebrity panelists with questioning contestants in order to determine their occupations. 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.

    In 1968 it returned in syndication as a daily production which ran until 1975. There have been several international versions, radio versions, and a live stage version.

    Produced by Mark Goodson and Bill Todman for CBS television, the show was initially called Occupation Unknown. The original series, which was usually broadcast live, debuted on Thursday February 2, 1950 at 8:00 p.m. ET. After airing alternate Wednesdays, then alternate Thursdays, finally on October 1, 1950 it had settled into its weekly Sunday 10:30 p.m. ET slot where it would remain until the end of its network run on September 3, 1967.

    Thumbnail of Steve Allen

    Steve Allen on being a regular on What's My Line?

    02:24
    Thumbnail of Betty White

    Betty White on appearing on What's My Line?, I've Got a Secret, and To Tell the Truth

    01:52
    Thumbnail of Jayne Meadows

    Jayne Meadows on marrying Steve Allen and appearing on What's My Line?

    05:58
    Thumbnail of Milton Delugg

    Milton Delugg on composing the theme to What's My Line

    01:34
    Thumbnail of Tom Poston

    Tom Poston on acting as a panelist on To Tell the Truth and other Goodson-Todman game shows

    04:09

    Steve Allen

    Steve Allen on being a regular on What's My Line?

    02:24

    Robert Caminiti

    Robert Caminiti on what he enjoyed about working on game shows, particularly What's My Line?

    01:53

    Cyd Charisse

    Cyd Charisse on appearing as a mystery guest on What's My Line?

    01:19

    Milton Delugg

    Milton Delugg on composing the theme to What's My Line

    01:34

    Frank Gifford

    Frank Gifford on his appearance on the TV show What's My Line?

    02:30

    Jayne Meadows

    Jayne Meadows on marrying Steve Allen and appearing on What's My Line?

    05:58

    Jayne Meadows on appearing on the panel of What's My Line? and on other game shows

    05:22

    Mitch Miller

    Mitch Miller on appearing on Person to Person with Edward R. Murrow, What's My Line?, and Password

    01:54

    Robert Mott

    Robert Mott on appearing on What's My Line?

    02:29

    Robert Mott on appearing as a contestant on What's My Line? with host John Daly

    02:32

    Jacques Pépin

    Jacques Pépin on appearing on What's My Line? and To Tell the Truth

    03:55

    Tom Poston

    Tom Poston on acting as a panelist on To Tell the Truth and other Goodson-Todman game shows

    04:09

    Ira Skutch

    Ira Skutch on the challenges of staging and directing a game show, specifically What's My Line? and how the audience was filmed

    02:48

    Betty White

    Betty White on appearing on What's My Line?, I've Got a Secret, and To Tell the Truth

    01:52

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