Director Tony Scott is a terrible director known for making terrible movies--but usually they're just boringly terrible (Enemy of the State, The Fan, Man on Fire, and let's stop there). However, his Unstoppable is a revelation in terribleness. Like the subject of his movie--an unmanned freight train loaded with explosive killer chemicals speeding out of control on a collision course with New Jersey--it's a film whose terribleness leaves the station slowly but eventually builds to a wildly obvious and UNSTOPPABLE juggernaut of unintentionally hilarious donkey shit.