What's My Line?

From: TV.com.
What's My Line? was one of network television's longest running and most beloved prime time game shows with a broadcast run of seventeen and one-half years. The game consisted of four panelists trying to guess the occupation of a guest contestant. As the questioning rotated, a panel member asked questions and the guest would answer either "yes" or "no." A contestant received $5 for each "no" answer. Ten "no" answers ended the game in favor of the contestant.

A mystery guest segment was also included in which the panelists were blindfolded. The mystery guests were paid $500 as an appearance fee whether they won or lost the game. This was in addition to the maximum $50 game winnings.