Nina Tassler, one of the most prominent women in the television industry as CBS entertainment chairman since 2004, says she is leaving her job at the end of the year.
CBS has been the most-watched television network in prime time during virtually all of her tenure. CBS announced Tuesday that Glenn Geller, one of her top deputies, has been promoted to CBS entertainment president to replace her.
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Tassler has ushered in some of television's most popular programs over the past decade, including "The Big Bang Theory," ''The Good Wife" and the "NCIS" franchise.
CBS Corp. Chairman Leslie Moonves said working with Tassler "is one of the proudest partnerships of my professional life." The two executives worked at the Warner Bros. TV studio before coming to CBS.