I cant believe nobody here has listed Yuzo Koshiro yet! He's the man behind such musical masterpieces as the Streets of Rage series and Act Raiser. He also did Revenge of Shinobi and is one of the japanese gaming godfathers behind the development house called Ancient. I'd recommend checking out the heavy metal remix stylings of his works done by Brazilian metal group Megadriver. They did a whole tribute album called Swords Shuriken and Fists, available for free directly from the band's own website. http://www.megadriver.com.br We also cant forget the legendary Koji Kondo, who has composed the major themes for almost every major Nintendo franchise since the original Super Mario Bros. While his tunes may not pump you up, you certainly cant forget them. I know I for one have the overworld theme music for SMB1 and 3, Zelda, and Starfox 64 permanently burned into my skull.