In his memoir, "Who Knew," media mogul Barry Diller talks about his career in television and Hollywood, and about his personal life and longtime relationship with fashion designer Diane von Furstenberg. Mr. Diller has been an executive at ABC and head of Paramount Pictures and 20th Century Fox (where he created the Fox television network). While at ABC in the mid-1970s, Mr. Diller was responsible for creating the Movie of the Week and the television miniseries, including "Roots."

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