If you wanted something just instrumental may I recommend several of the soundtracks on "300", the slamming guitar riffs and percussion just scream the word "HEROES" everytime I listen. These tracks in particular:
"Remember Us"
"The Hot Gates"
"The Agoge"
"Come and Get Them"

I also think the music from "The Last Samauri" and "The Last Mohican" might be worthwhile also.

TEEEEEEJ

Jayne Cobb: Shepherd Book once said to me, "If you can't do something smart, do something RIGHT!