Going up the Moon at the end of Majora's Mask. This big, beautiful, green tree in the middle of a grassy meadow under a blue sky. Then seeing the kids dancing around with the masks of the bosses you had defeated throughout the game on, with the one sitting under the tree with Majora's on. It was this surreal moment where you're like, "holy cow, this is something out of a dream!" But it was really cool because because you had never really seen anything like it but it was all familiar. It fit the alternate reality feeling of the game. Of course, I thought that whole game was epic but that was just plain AWESOME!!