My school mascot is a Spartan, so in unison everyone is reciting quotes from the movie. Its quite funny at times. I'm on the baseball team, so before we break to go to our positions we do a 1,2,3 "spartans" cheer. Several times we have also thrown in the occasional "Spartans prepare for glory" before we break.
I have also learned a bit more about the history of the battle that was in the movie 300. When the spartans battled the persians on the end of the mountain pass, the persians actually found a side route where they flanked the spartans and defeated them.
I also learned that in the end of the movie when you see that last battle...they end up losing

...which should be easy to interpret since their is no longer a country named Sparta, while there is still Persia...
Extra info on Sparta/Leonidas
Thermopylae (Greek, “Hot Gates”), pass in ancient Greece, southeast of Lamiá, between Mount Oeta and the Malian Gulf and leading from Thessaly (Thessalia) into Locris. The name of the pass is taken from hot sulfur springs in the vicinity. Thermopylae was the main route by which an invading army could penetrate from the north into southern Greece. In ancient times it was a narrow track about 15 m (about 50 ft) wide passing under a cliff, but alluvial deposits have so altered the coastline that it is now a broad swampy plain from 2.4 to 4.8 km (1.5 to 3 mi) wide. During the Persian Wars, Thermopylae won eternal fame as the scene of the heroic death of Leonidas I and his 1400 men, 300 of whom were Spartans, in their attempt to stem the tide of Persian invasion in 480 bc. The Greeks were betrayed by Ephialtes, a Thessalian, into the hands of the Persians, who, by following a path over the mountain, attacked the Greeks from the rear. The Battle of Thermopylae was recorded by the Greek historian Herodotus in his History. Again, in 191 bc, the Seleucid king Antiochus III (the Great) was defeated while attempting to check the Romans at this point.
Leonidas I (died 480 bc), king of Sparta (490?-480 bc). Leonidas is best known for his heroic defense of the narrow pass of Thermopylae against the Persian army of Xerxes I in 480 bc. With an outnumbered force of 6000 to 7000 men, of which 300 were Spartans, Leonidas withstood the Persian invasion for two days. A Thessalian traitor named Ephialtes, however, showed Xerxes a mountain path around the cliffs, and when Leonidas learned that he was about to be attacked from the rear, he sent most of his troops to safety. He remained with the Spartans and about 1100 other soldiers, mainly Thebans and Thespians, who refused to leave. Leonidas and his men perished bravely. The famous Battle of Thermopylae was recorded by the Greek historian Herodotus in his History.