Bruce Jenner was once hailed as the greatest athlete in the world and later became a reality television star with one of the world's most famous families. Now, the former Olympian is revealing a secret that has caused him turmoil for decades. "For all intents and purposes, I'm a woman," Jenner told ABC's Diane Sawyer in an exclusive interview that aired Friday in a special two-hour edition of ABC News' "20/20." "People look at me differently. They see you as this macho male, but my heart and my soul and everything that I do in life -- it is part...