Frank Miller's 300, new trailer - it's so goddam good it makes me cry.
(This is a longer, better version than currently on the official website/apple trailer site).
FYI, this is being directed by Zach Snyder who did the outstanding remake of Dawn of the Dead ("These are the people who died! Died!") and will be be (co) writing/directing The Watchmen (written by Allan Moore) which is a significant piece of modern lit (regardless of the medium)