NEW YORK (Standard&Poor's) Aug. 26, 2008--Standard&Poor's Rating Services said today it revised its outlook on Dallas-based Blockbuster Inc. to stable from negative. At the same time, we affirmed all other ratings, including the 'B-' corporate credit rating on the company. "The outlook change reflects the meaningfully improved performance and enhanced credit protection profile driven primarily by significant cost reductions," said Standard&Poor's credit analyst David Kuntz.