There was an infamous episode on Hollywood Squares with Jan Murray. They ran into sundown on at the start of Yom Kippur, and Jan couldn't work any longer. Peter explained where Jan went and they just turned off his square, the upper right. That was fine for two games, but the third ended up a four-squares-to-four tie! They paid each player $50 a square as on the nighttime game and everyone had a good chuckle over it.
Much later in the run, it happened again, again with Jan Murray! That time, fortunately Waylon and Madame were on the second tier, so they simply had Madame move upstairs to Jan's square. Vincent Price made a point of putting black tape over Madame's name on the sign, but they didn't have a chance to switch out Jan Murray's name, so Madame got a lot of material out of that!