The “Q” Factor strikes again. Six years after Quincy Jones sort of “discovered” a 19-year-old rail-thin singer-actor named Michael Jackson, and six years before Quincy did again with rapper Fresh Prince, aka Will Smith, he saw the awesome talents of Oprah Winfrey. She was hosting her newly owned “A.M. Chicago ” as Quincy passed through Chicago. When he saw her on local TV in his hotel room, he cast her in the classic and controversial film, The Color Purple.