Jack Paar was a nervous, superstitious gent and when he was working at NBC, he usually declined to ride the elevators at Rockefeller Center. Instead, he would reach his office each morning by an intricate series of stairwells and shortcuts. His route took him through the usually-deserted Studio 6B where later that evening, he would do The Tonight Show.
One day, Paar arrived at the studio much earlier than usual and, when he walked into 6B, he found himself walking onto a live (live!) broadcast of the game show, Play Your Hunch.
The studio audience went berserk and Paar, finding himself unexpectedly on live TV, attempted to flee. But the show's host, Merv Griffin, ran over and got a vise-grip on the bewildered star's arm to keep him there so he could conduct a brief, funny interview. Paar swore he had no idea that his studio was being used by another program each morning. "So this is what you do in the daytime," Paar quipped to Griffin, who had occasionally sung on The Tonight Show.
Later, Paar admitted he was impressed with how Griffin had "milked" the accident for its maximum entertainment value by keeping him there. He gave Merv a shot guest-hosting The Tonight Show and when that went well, it led to Griffin becoming a candidate to succeed Paar. When Johnny Carson got the job instead, NBC signed Griffin to do an afternoon talk show which debuted the same day. It was their way of keeping Merv "on deck" in case Johnny bombed — which, of course, didn't happen. Griffin went on to host his own long-running talk show in syndication and also became a producer of hit game shows.
Around the peak of his success, Griffin was asked to reflect. He said, "If Jack Paar hadn't been afraid of elevators, I'd be hosting shows like Wheel of Fortune or Jeopardy! instead of owning them."