Excerpt: I went into this moving thinking it would be a fun mindless action movie. I was right it was a mindless action movie but it lacked the fun. The only thing that made this move remotely watchable was Denzel Washington.
Conclusion: I love Denzel Washington, Scott, too... but the result in this movie is just not good. Sometimes it is so ridiculous that the only thing you can do is laugh. FX are not the best I've seen, sometimes they look the same as in Driver. If you love the Denzel/Scott duo, forget this "Unstoppable" BluRay.
Summary: The movie does what anyone would expect at high speed. If like me you were blown away by the excellent Runaway Train (1985) which offered a lot more tension and insight on the human condition, you will probably wish Unstoppable would be more pretentious or ambitious at least.