I have far too many to name, but I'll list some of the most memorable ones.
Mind you, only certain ones are actual events in the games. Most of the really memorable things for me are things I did in the game, that meant something to me, that you didn't necessarily have to do.
- The ending of Link's Awakening.
- Holding my Gameboy to my ear for minutes at a time, just listening to the music at Mt. Tamaranch (Link's Awakening)
- Running around in the windmill for minutes at a time, just listening to the Song of Storms (Ocarina of Time)
- For some reason, I really loved teleporting in Ocarina of Time.
- Arriving on the moon in Majora's Mask.
- Sneaking around Gerudo fortress even when I didn't need to.
- Spending mucho time in Lon Lon Ranch, hanging out with Maron, riding Epona, listening to the music, and attacking chickens.
- Entire ending to Wind Waker.
- Finally beating the second dungeon in Link's Awakening, after three years of being stuck not finding the master key (found it by coincidence one day).
- Exploring and running about the Lost Woods and the Kokori Village.
- Fooling about in Kakariko, hookshotting from roof to roof.
- Sailing in Wind Waker, and hanging out at the cabana just relaxing myself through the game.
- Utilizing the Bunny Hood in Majora's Mask.
More later, perhaps. I haven't even mentioned Minish Cap or LttP and several others, and I haven't nearly covered everything in the games I have mentioned.