1. Legend of Zelda: Ocarina of Time
2. Final Fantasy 9
3. Burnout 3: Takedown
4. Suikoden
5. Resident Evil 4
I'd of loved to say FF6 but , jesus, I couldnt get past the octapus guy in the Theatre.
What I killed him in one move (the move where Stragus (I believe) strikes with the sword 8 times or so (I forgot).
Also I can't really pick I'll try:
Xenosaga
Street Fighter III: Third Strike
Final Fantasy X
Dragon Warrior III (I played it for over 100 hours and I wasn't done but my gameboy broke

, well I completed the game but you can still play after you win and I was just doing cool shit).
Final Fantasy IX