After 25 years on network TV, "The Oprah Winfrey Show" has its final run this Wednesday. The show has featured tens of thousands of guests and touched countless viewers' lives here and abroad. One man who Winfrey helped make a star is Dr. Phillip McGraw — a psychologist, author and host of his talk show "Dr. Phil." He is Winfrey's close friend and has given advice on her show for five years. Host Michel Martin speaks with Dr. Phil about Oprah Winfrey's legacy and his relationship with her.