Oprah Winfrey—businesswoman, philanthropist, actress and former TV host—will join CBS' 60 Minutes as a special contributor, the network announced Tuesday morning. The veteran interviewer will begin this fall, and, like other contributors, she won't appear on every episode of the Sunday news program. "In its beginnings, 60 Minutes did hardcore investigative pieces, as well as features involving celebs or nonfamous people of note," says Les Rose, a professor at Syracuse University's Newhouse School and veteran photographer and field producer for CBS, adding that Winfrey will likely do the latter. "When there is a celebrity or sensitive situation, she will be...