Oprah Winfrey

Founder, OWN: The Oprah Winfrey Network

As host and producer of The Oprah Winfrey Show, Oprah Winfrey helmed the highest-rated talk show in history. She launched O, The Oprah Magazine in 2000, was nominated for an Academy Award for Best Supporting Actress for her role as Sofia in the 1985 Steven Spielberg film The Color Purple, and founded the OWN television network.