How sad to see William Petersen leave "CSI" tonight. He has been an essential part of the the "CSI" DNA since day one. A sly, low-key actor, he has embodied the show's intense worship of science and reason. Yes, his Grissom has had love interests (Sara, Lady Heather) and mood swings, but nothing has ever seemed to captivate him quite like his work. While his counterparts on spinoffs "CSI: Miami" and "CSI: NY" seem to get swept up in their own emotional issues, Grissom has remained almost obsessively focused on the case at hand and the evidence.
At times, he seemed to be the last sane man in a town -- Las Vegas -- known for its compulsive and decadent behavior. I'll post a review of his final episode tomorrow morning.