I watched it for the action, knowing that it is highly unlikely that anything made by a production studio is going to have any real sense of realism.
Action wise, pretty good.
Fact wise...
Yes there was a King Leonidas.
Yes there was a festival called Carhnae.
Yes the main Spartan Army stayed home.
Yes it was because of the Carhnae.
I doubt it was for political reasons.
Yes Spartan Women were treated better than any other Greek woman.
Unlikely that they would be equal to men, but while the men were away the women did run the City.
Yes there are no defensive walls in Sparta.
The Athenians kicked the Persians down a well.
Yes Leonidas lead 300 Spartans into Thermopylae.
No they didn't wear loincloths, they fought naked.
No that was not a real Spartan Phalanx.
That was a Macedonian style Phalanx. Greeks fought with the spear over-handed, which provided a much more powerful thrust.
Yes he did actually say the following famous quotes: Then we shall fight in the shade, Come and get them, Tonight we dine in Hell... what no tables? Fine Purgatory...
No it was more like 500,000 Persians not a Million.
Yes there was a lunatic named Xerxes.
Yes he went to Thermopylae.
Yes his fleet got beaten up by Poseidon.
Yes he still landed the vast majority of his troops.
Yes there was a guy named Ephialtes.
No he probably wasn't a hunchback, just a moron.
Yes Xerxes eventually won. But the Immortals were mauled.
No the Immortals weren't middle-aged mutant ninjas.
No the Persians didn't use elephants, or rhinos.
Naptha... probably... although it wasn't cheap back then.
Xerxes eventually went on to sack Athens.
Although why he went through Thermopylae to do it... And why he needed 500,000 men to do it...
Yes the Persians were massacred at Plateha (however you spell it)
No Xerxes wasn't there he ran away back to Persia, who then later was ruled by Darius the II. Who was later usurped by Alexander the Great.
Ignoring all of that... okay movie. Good music... gratuitous sex scenes not withstanding I liked it.
Favorite part:
When Gorgo disembowls the politician.