Caray had lively discussions with commentator Steve <answer>Stone</answer>, who was hand-picked by Harry himself, and producer Arne Harris. Caray often playfully quarreled with <answer>Stone</answer> over <answer>Stone</answer>'s cigar and why <answer>Stone</answer> was single, while <answer>Stone</answer> would counter with poking fun at Harry being "under the influence." <answer>Stone</answer> disclosed in his book "Where's Harry" that most of this "arguing" was staged, and usually a ploy developed by Harry himself to add flavor to the broadcast. The Cubs still have a "guest conductor", usually a celebrity, lead the crowd in singing "Take me out to the ballgame" during the 7th inning stretch to honor Caray's memory.
Who did Caray often playfully quarrel with?
Stone