Oprah Winfrey Show

Oprah Winfrey, considered the most influential woman on U.S. television, brings "The Oprah Winfrey Show" to a close on Wednesday after 25 years.Winfrey, 57, is expected to focus in the next few years on her cable channel OWN (Oprah Winfrey Network), which launched in January 2011.Following are some key facts about Winfrey and her show.* Winfrey was born to a poor, single mother in rural Kosciusko