Well mine is, withought a doubt, Twilight Princess. I mean, just stop and think: You start the battle by fighting the Princess of Hyrule: Zelda, the person you've been trying to protect! ( Oh, the irony! :O ) Then after you free her from Ganon's controll, Ganon goes Berserk by transforming into a giant beast! Transform into Wolf Form for a head-on Beast vs Beast showdown, and defeat him. You then appear in Hyrule Field along with the princess, and must face Ganondorf with none other than your trusty steed: Epona! Along with Zelda and her trusty Bo of Light of course. After you defeat him on horseback, you prepare for the fight ofa lifetime: Link vs Ganondorf. You must apply almost all of your sword techniques to weaken him, and at the last minute, deal a massive critical blow, Saving Hyrule, returning it to its peaceful state.
Now doesn't that souund awesome!!! Just add in the motion controlls and you have the best Zelda final boss there is, and will ever be. Thanks for your time, and please give me your thoughts!