What’s My Line?

What’s My Line? is a panel game show that originally ran in the United States on the CBS Television Network from 1950 to 1967, with subsequent U.S. revivals. The game uses celebrity panelists to question contestants in order to determine their occupation, i.e. “line [of work]”, with panelists being called on to identify a weekly celebrity “mystery guest” while blindfolded. It is the longest-running U.S. primetime network television game-show.
The following are compilation clips of some of the celebrity guests on the show…

What’s My Line?  From Wikipedia    
What’s My Line?  Episode Guide  
What’s My Line?  YouTube Channel