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Wanted: Episode from 29 May 1967 with Leonard Nimoy. Source IMDB

According to the Wikipedia "Two celebrity-contestant teams competed. The object was to convey the name of a famous person by giving clues, leading to words that sounded like part of the person's name (towards the end of the NBC run, places were also used as subjects). The contestant then had to sound the words out to figure out the person in question. The celebrities were not allowed to use anything that might give away the answer or to give a clue that would lead to the proper name of the person. They also could not say the clue to the contestant, with the penalty being loss of control for any violation. Each correct guess won a point, with three points winning the game."