The 2011 hyper-stylized actioner Immortals is streaming online with Netflix Instant Watch.
This movie has a pretty rotten score on Rotten Tomatoes (only 36% fresh), but several reviewers note that it is a visual treat at moments even if the story sucks. So, if you liked 300 you might light this one. Your primer is below:
In Ancient Greece, King Hyperion searches for a powerful weapon that will free the bloodthirsty Titans and enable them to overpower the gods and enslave mankind. Unable to interfere directly, the gods choose a champion to defend them: Theseus.