Official site This looks good... very good... the only thing is we're going to have to wait until 2007 to see it.
300 is a movie by Zack Snyder based on Frank Miller's graphic novel. The story is of course the battle of Thermopylae - once visited in the sword and sandal era as The 300 Spartans. This time it's shot entirely in front of a blue screen and the effect is - to look at the trailer - stunning. Already toys are going on sale.
Watch the trailer here
Info and posters here