Arts and Culture Lifestyle Oprah Winfrey: Forbes Magazine’s Most Influential CelebrityCedric 'BIG CED' ThorntonMarch 15, 2013March 15, 2013 by Cedric 'BIG CED' ThorntonMarch 15, 2013March 15, 2013940 Oprah Winfrey tops Forbes magazine’s annual list of the “Most Influential Celebrities,†with an “influential rate†of 48 percent....