It definitly looks very good.. worth seeing.. If you really wanna get down.. read the comic by frank miller.. its amazing too
If anyone feels like not jumping to assumptions, 300 is directed by Snyder and Sin City was directed by Rodriguez. The comics were both written by the same guy, however (Frank Miller). It is based on true (if a little exaggerated) events, and will be released on March 9th. A little research goes a long way, kiddos.