Majora's Mask *IS* the worst Zelda game. The three day system is terrible. Plus, the game takes the best parts of Ocarina of Time and stamps them into the mud. I haven't even played a Zelda game since Majora's Mask -- that's how much I hate it. (Well, and I haven't owned a Nintendo console since N64.) I lost the guru for GotD singularly because I hate Majora's Mask and refused to believe it could even win in round 2, let alone beat up on the entire bracket. I knew a Zelda game would win, so I rode out Twilight Princess instead.
All of you defending Majora's Mask either have some very irrational love for it, actually enjoy the idea that a free-roaming adventure game puts you on the clock and that you have to do specific things at exact specific moments, or have found Zeldas since even more lacking (since, as I mentioned, I haven't played anything since Majora's Mask.)