Oprah Winfrey. (Photo: Getty Images) Johannesburg - They waited in anticipation for a ?special guest?, as per the announcement by the host, US ambassador to South Africa Patrick Gaspard. They had no idea that Oprah Winfrey was about to walk into the conference room. When the queen of TV talk shows entered from the backstage area, they erupted in joyous screams. Their Mam? Oprah, as they affectionately call her, walked into the conference room at the Premier Hotel at OR Tambo International Airport in Ekurhuleni.