As Oprah says farewell to her show – and embarks on her new venture with OWN: The Oprah Winfrey Network – she knows one thing for sure: She'll always have Gayle. "Gayle is more excited about my success than I am. It makes her genuinely happy," Oprah says of her best friend. "We've been friends since I was making $22,000 and she was making $12,000. We've made this journey together."