On today's episode,Variety's Michael Schneider speaks with the pillars of "Big Brother" as the U.S. rendition of the franchise hits its milestone 1,000th episode. Chen Moonves remembers the first time she saw herself referred to as the "Chen Bot." And showrunners Allison Grodner and Rich Meehan reflect on the "crazy social experiment" that has become a hallmark of CBS' summer schedule.

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