  oz bilks state retirement system  ldquo jenny granholm rsquo s rdquo decisions are still costing michigan taxpayer rsquo s money a michigan movie studio has defaulted on its own bills michigan motion pictures studios the producer of the movie   oz the great and powerful  has missed its last three payments on 18 million of their bond obligations for an article on what the  ldquo michigan movie credits rdquo  really cost us as taxpayers click on the following story link  http wwwmichigancapitolconfidentialcom 18384 utmsource mackinac center publications utmcampaign dd8146ef0bmichcapcon12282011 utmmedium email 