Most epic boss battle of Nintendo's history?

[Sorcery]

Well, in my opinion it comes down to a few games. Ocarina of Time, Star Fox 64, Metroid Prime, Mother 3, and Kirby Superstar are the only games that came to mind when I thought about epic boss battles in Nintendo games. The winner definitely has to be Ocarina of Time, because of the dim lighting, Ganon's size, as well as the build-up towards the final battle (running up the tower, fighting Ganondorf, escaping the crumbling castle, and then the "THUMP" before the fight).