The Oprah Winfrey Show, often referred to simply Oprah, is an American syndicated talk show that aired nationally for 25 seasons from September 8, 1986 to May 25, 2011 in Chicago, Illinois. Produced and hosted by its namesake, Oprah Winfrey, it remains the highest-rated daytime talk show in American television history. The show was highly influential, and many of its topics have penetrated into the American pop-cultural consciousness. Winfrey used the show as an educational platform, featuring book clubs, interviews, self-improvement segments, and philanthropic forays into world events. The show did not attempt to profit off the products it endorses; it had no licensing agreement with retailers when products were promoted, nor has the show made any money from endorsing books for its book club. Oprah had its roots in A.M. Chicago, a half-hour morning talk show airing on WLS-TV, an ABC owned-and-operated station in Chicago. Winfrey took over as host on January 2, 1984 and, within a month, took it from last place to first place in local Chicago ratings.