The Oprah Winfrey Show has remained the number one talk show for 21 consecutive seasons, winning every sweep since its debut in 1986.* It is produced in Chicago by Harpo Productions, Inc. and syndicated to 212 domestic markets by King World and to 135 countries by CBS Paramount International Television.
Source:
*Nielsen Cassandra Ranking Report—November '86 to July '99 and Wrap Sweeps, November '99 to July '07. Primary Telecasts Only.
*Nielsen Cassandra Ranking Report—November '86 to July '99 and Wrap Sweeps, November '99 to July '07. Primary Telecasts Only.