Twilight Princess was the best, the dungeons in that game were awesome, never played a Zelda before where they took so much time to beat. Though Ocarina of Time is definitely runner up.
Ocarina of Time is the best Zelda game by far, but Twilight Princess will always be good because it was the one I was able to beat without resorting to cheating. yes, I suck
Of course, Ocarina of Time is my favorite (and I still haven't found ALL of the stupid heart containers (I need three more)). But, Majora's Mask was the toughest to beat IMHO and outside of these two N64 games I would have to say it's a tie between Wind Waker and the original on the NES.
My favorite was definetly Ocarina of Time. The story was good, the music was great, and I liked it so much I cried at the end. Twilight Princess was definetly #2, hands down. The graphics were incredible compared to any of the others. I wish Nintendo would make another one with what was great from both of the games.
Twilight Princess was too easy, beat it with 3 hearts and didn't die a single time. Ocarina of time, i tried to beat with three hearts, died about 113 times. Majoras mask is my favorite though, because of the time limit and how you could re-fight bosses anytime without going through the whole game again. Also it was really hard, and I have yet to even try to beat it with 3 hearts. (I need to play Wind Waker) The DS zelda games are fun, but there is just something about it that I don't like... Maybe it is because it is so easy. Ok I am not going to talk about any more, my post is already to long.