In this Sept. 3., 2008 file photo, Oprah Winfrey, center, hugs Olympic gold medalist Nastia Liukin, as some of the 150 Olympians invited look on for the taping of the season premiere of �The Oprah Winfrey Show� in Chicago�s Millennium Park. Winfrey�s announcement that she was taking her show off the air in December 2011 after 25 years is a blow to the �Second City� where she has remained the city�s ambassador and kept the spotlight shining on it. M. Spencer Green / Associated Press
