Oprah Gail Winfrey is the American multiple-Emmy Award winning host of The Oprah Winfrey Show, the highest rated talk show in television history. She is also an influential book critic, an Academy Award-nominated actress, and a magazine publisher. She has been ranked the richest African American of the 20th century, the most philanthropic African American of all time, and the world's only black billionaire for three straight years. She is also, according to several assessments, the most influential woman in the world.