I reviewed this movie earlier this year when I saw it in theaters.
I stand by what I said in my earlier review. Its a movie which is a video-game interpretation of a depiction of the events leading up to the battle of Thermopylae, complete with a narrator who misrepresents the events in a propagandistic manner for his own purposes. Oh, and all of this is done in a graphic novel style.
With all of that said, the movie still stands as it is. Its entertaining, even for all of its implausibilities and its problems. We get to see how a phalanx works (and unfortunately, get to see what amounts to a Spartan video game)
Even with all of the subtexts involved, if you can manage to turn off your brain, its an action film that manages to do ok. Its a movie that, even for the weight it tries to bring, knows how to have fun. (unlike, say, Troy).