The Legend of Zelda: Ocarina of Time: Z-targeting, swordplay, Epona, fishing, atmosphere, brilliant sub-quests, plenty of puzzles, amazing boss battles, massive, prob the best soundtrack ever, I could go on.
Perfect Dark: Spent an unbelievable amount of time with this masterpiece, best multiplayer experience ever, especially with those evil Dark sims added into the mix.
Super Mario Kart (SNES): I still play this game now, nothing beats being a red ape, in a wife-beater, in a go-kart, hopping around corners and over lava, and illogically going faster than all the smaller characters.
Metroid Prime: They pulled off the 3D transition perfectly. One of the few challenging games of this generation, some of the bosses were just brilliant to fight. It was so atmospheric too & there was so much to explore and collect. And those Chozo ghosts are the best enemies ever!
Chrono Trigger: The best rpg ever, so stylish, great story, great characters & the double & triple techs were so damn cool. The music is the best I have heard in a game, amazing.