Think Fast is an American television quiz show that ran on ABC from March 26, 1949 to October 8, 1950. Media critic John Crosby described the program as "an adult's version of the old child's game, 'King of the Hill'". The quiz show revolved around a group of five panelists (three regulars and two weekly guest panelists) who would compete to see who had the most to say about a particular subject. They sat at a large table, each getting a chance to sit at the "King's" throne by out talking the others on subjects decided by the host. The regular panelists were Leon Janney, , who was also the show's musical director, and . The moderator was Mason Gross for the first episodes, then Gypsy Rose Lee afterward.