Oprah Gail Winfrey (born January 29, 1954) is an American media proprietor, talk show host, actress, producer, and philanthropist. Winfrey is best known for her multi-award-winning talk show The Oprah Winfrey Show which was the highest-rated program of its kind in history and was nationally syndicated from 1986 to 2011. Dubbed the "Queen of All Media", she has been ranked the richest African-American of the 20th century, the greatest black philanthropist in American history, and is currently North America's only black billionaire. She is also, according to some assessments, the most influential woman in the world. In 2013, she was awarded the Presidential Medal of Freedom by President Barack Obama and an honorary doctorate degree from Harvard.