Let me start this with one word.
Fuck.
This movie is intense. John Travolta plays a bloody brilliant psycho, he is scary as hell. I wasn't sure what to expect with this one, especially since I'd not heard of it until yesterday, but my word, it is a brilliant movie.
At first, I was wondering what was going on, trains moving around everywhere, Denzel calmly issuing orders to train drivers, then all of a sudden, boom. Travolta completely takes over. I won't ruin it by telling you what happens, but it had my heart racing. Had me genuinely worried for the hostages, because I'd never seen Johnny boy do a role like this before.
Go and rent it people, it's worth it when theres crap all on TV these days! Well worth it!