While the standard complaint might be about the surfeit of blood spilled, the real problem isn't so much the gore that gets splattered around in 300 as its lack of effect - it's all antiseptic and pretty.
[Gerard Butler's character] charisma is elusive. He vigorously enunciates like a summer stock player doing Shakespeare. But the writing's overblown. And locating the requisite sorrow in this tale of heroism is an afterthought for Snyder and co.
Whatever your reason for going into 300, I can't imagine leaving it very excited by what you get. I can imagine being excited by the prospect of leaving -- for me, the end credits of 300 rolled up on the screen with the comforting shock of a parole notice
All this bellowing and testosterone gets old fast -- especially since there's not much of a plot outside of the combat scenes, and the not-much-of-a-plot scenes are laden with dialogue worthy of Anakin and Padmé.
Keeping in mind Slate's Mickey Kaus' Hitler Rule -- never compare anything to Hitler -- it isn't a stretch to imagine Adolf's boys at a 300 screening, heil-fiving each other throughout and then lining up to see it again.
Apart from its pro-war propaganda, that comes in the form of unrelenting voice-over narration, "300" is a dog of a movie where cookie-cutter CGI battle scenes show thirty actors pretending to fight to the death.