The television commercials I've seen for this film have made it look very interesting. Now the reviews I'm reading (Washington Post, Chicago Tribune) only make me want to see the movie more.
I know there's no chance of me seeing this in the theater, so I'll wait for the DVD. Though, I understand that Hero was originally released in Asia back in 2002 and has been available as an import DVD for over a year now. It's just that Miramax, who owns the US distribution rights, has been sitting on the film for reasons only known to them.