GSN aired some early syndicated TTTT episodes where if a member of the panel would've "disqualified" him/herself from questioning, they would switch places with Garry Moore, having him question the team of challengers. In one case, Bill Cullen was subbing for vacationing Garry Moore, and Peggy Cass traded places with Bill for the one round.
Kitty Carlisle also got in the host's chair on one ep via this method...neither she nor Peggy were particularly good (the latter was hosting during game 1, and forgetting the 1st break occurs just before the questioning begins, almost started the game immediately), but it was still fun to see them try their hands.
Chuck Donegan (The Illustrious "Chuckie Baby")
