300

I wish I could say this is a great movie. It's a lot of fun, and there are definitely some heroic moments in it and some "ra ra freedom" stuff. The cinematography is excellent, and ... did I say this? It's a lot of fun. But don't go to this movie thinking you're seeing Martin Scorcese picture or anything. It's a moving comic book -- which is exactly what it's advertised as.
I've read some of the reviews, and they are all over the top. Those hating the movie compare it to Hitler-era antiSemitic propaganda. Nah, it's too silly for that. Those who love the movie make claims about the film's "greatness" that just don't wash. It's fun. It's silly. It's a moving comic book.
There is a narrator in this film. I understand that this is supposed to be the like the narrator lines in a comic book, but it's utterly annoying, and makes for several laughable moments. Problem is, some of those moments are, apparently, supposed to be the most serious and inspiring. The narration turns these moments into silliness.
There is one moment in the movie, though, that strikes me as very true to real military experience. I hesitate to say what that moment is, because I don't want to spoil anything for anyone. But anyway, here goes (we're talking about a comic book, after all). Early in the movie one of Xerxes' minions threatens the Spartans that "Our arrows will blot out the sun." One of the Spartans responds, Spartanly, "Then we will fight in the shade." Cool line, fine.
Later on, though, the Persians actually launch their arrows, and the Spartans look up in some awe at the spectacle, as the arrows actually blot out the sun. Then the Spartans raise their shields and hide under them, all within earshot of each other, while the arrows rain down for a couple minutes. While they're all hiding under their shields, the Spartans laugh about "fighting in the shade" and other jokes, poking fun at each other, ridiculing the Persians for cowardice and the like. This scene feels real.
The rest of it, though, is just a fun moving comic book. Don't take it too seriously.