Audio problem: When Britney Spears gets pushed into the Pit of Death, you hear her talk and scream but her lips are not moving.
Revealing mistake: When Leonidas breaks his neck in the "stomp the yard" scene, a line can be seen where the neck will break open before it does. (00:33:20)
Audio problem: When Leonidas is training his son, we can see his wife and the captain talking. In shots where Leonidas hits his son in background with a vase and a chair, his wife and the captain are now in the foreground talking to each other, but no words are audible.
Deliberate mistake: During the scene of the Spartans moving out, they sing "I Will Survive." Sonio is clearly singing the song alone, because his lips are singing the song before the music or anyone else is singing.
Continuity mistake: When Leonidas says, "The oracle also said our painted-on abs look fake," the fat guy is having abs painted on him, but when the Spartans are skipping, his abs are gone.
Continuity mistake: When Xerxes rips his nipple off he staples it back on. But when he tries to make a deal with Leonidas the staple is gone.
Continuity mistake: When Leonidas and the black guy walk to the pit of death, look around: there is no garbage disposal switch anywhere. But when Leonidas kicks everybody in, there is suddenly a garbage disposal switch that Leonidas uses.
Continuity mistake: When the Leonidas writes "marry me" on the Queen, it disappears and reappears over and over again.
Continuity mistake: When the Oracle/Ugly Betty sneezes on Leonidas and the prophets, she gets snot all over them. Then it cuts to her falling down, then back to the prophets and Leonidas, and the snot is gone.
Continuity mistake: When Leonidas kills the penguin with the harpoon, he returns to Sparta wearing the penguin skin and wearing a beak necklace, but the beak is much smaller than the actual beak.
Other mistake: When the captain gets shot with the spear after he kills Rocky, he falls to the ground, and you can see part of the spear sticking out. But where is the back end of the spear?
Continuity mistake: When the Shreck baby pukes all over the elder, there is barf all over him. It cuts to the baby and back to the elder, and there is no barf on him. He couldn't have wiped it off that fast.
Continuity mistake: When Leonidas tells Xerxes' messenger to walk with him to the Pit of Death, he holds his hand. On the walk over, the camera focuses on their hands and they release. The shot then changes to an overhead shot and you see them release hands again.
Other mistake: When Dilio shows Leonidas he has lost his eyes we can see right through, but on the back of his head there are no holes, and if there were his hair is still covering them.
Revealing mistake: When Leonidas stabs a Persian with a sword and pulls it out, there is no blood on it.
Continuity mistake: During the 'Stomp the Yard' scene between the Persians and Spartans, the head Persian has a scarf around his face when he dances (because it isn't him) but it's nowhere to be seen during closeup shots.
Revealing mistake: In the break-dancing scene, the dancing Spartans lose all of their muscle mass. The dancers are a lot leaner than the soldiers in the rest of the movie.
Continuity mistake: The lady who was massaging Queen Margo was jumping on her back and squishing her back flat. But on the scene where it shows her face, her back was not flat like the previous scene.
Continuity mistake: The six-pack that is sprayed on to Chad keeps disappearing and reappearing.
Revealing mistake: When Leonidas is training his son, in the long shots with the chair and vase, you can see in some shots that the kid has been replaced with a stunt double.
Answer: He was surprised by the announcer's statement.
MasterOfAll