Oprah Winfrey is an American media executive, actress, talk show host, television producer and philanthropist. She is best known for her talk show The Oprah Winfrey Show, which was the highest-rated television program of its kind in history and was nationally syndicated from 1986 to 2011 in Chicago. Dubbed the "Queen of All Media", she was the richest African American of the 20th century and North America's first black multi-billionaire, and has been ranked the greatest black philanthropist in American history. She has also been sometimes ranked as the most influential woman in the world.
Image Source: Obama White House
President Barack Obama awards the 2013 Presidential Medal of Freedom to Oprah Winfrey