Oprah Winfrey, the creator of the most popular television show in history, is a consummate businesswoman. Winfrey started her own production company and syndicated the Oprah Winfrey Show globally. Winfey publishes O, the Oprah Magazine; has an XM Satellite Radio channel; created Oprah.com; executive-produced the movie Precious; and launched cable's OWN: The Oprah Winfrey Network. In 2009 Forbes magazine estimated that the noted philanthropist is worth more than $2.3 billion.

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