Over the past decade and a half, U.S. District Court Judge Thelton Henderson has become the one of the most important figures in the state in setting prison policy, or at least trying to change it. Henderson's rulings have placed the judge firmly in control over issues ranging from use of force at Pelican Bay State Prison to internal discipline to improving medical care. They've also put him in position to direct billions in state spending into the correctional system -- with no legislative oversight. The 72-year-old judge's career has just been chronicled in Abby Ginzberg's documentary, "Soul of Justice:...