It is an ok action movie:

Plus: + color contrasts are put very nicely
+ They put on nicely the Spartan mentality
+ They did introduce a few tasty and apparently historically true quotes (tonight we dines in hell and referring to the deluge of arrows "then we'll fight in the shadows)
+ action scenes are quite good


Minus: + historically many many flaws
+ Xerces looks like a S&M dude instead of a King
+ If you see the movie in hD, you can see the flaws in the special effects
+ they shouldn't have put some stupid shit like the mutant giant on the Persian side that have nothing to do with the battle.

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final note: 6.7/10