U.S. actor and producer, best known for playing Dr Gilbert “Gil” Grissom on the hit CBS series CSI (Crime Scene Investigation), William Petersen poses for photographers during the MIPTV, an international entertainment content market, held annually in Cannes, southern, France Tuesday March 31, 2009. William Petersen attends MIPTV in celebration of the milestone season of CSI. (AP Photo/Lionel Cironneau)