Oprah Winfrey is one of the most influential people in America. "The Oprah Winfrey Show" reaches 44 million people each week. And those numbers translate into big sales for the products Oprah recommends.
CNBC's "The Oprah Effect" explores the explosive effects of her influence and how her impact on business is worth billions. Plus, a media coach reveals the moneymaking secrets of how to get on The Oprah Winfrey Show.