Oprah Winfrey, The Most Powerful Women - Forbes.com

With a net worth of more than $1 billion, an Academy Award nomination, a hit television show, a successful magazine (O, The Oprah Magazine) and a cable channel (Oxygen Media), there seems to be little else that Winfrey, 51, can do to add to her status as an international media phenomenon. What does Forbes Magazine have to say about Oprah?