Quote Originally Posted by Behold the Void
Super Smash Bros. Melee!
I second that!

Final Fantasy VII
Final Fantasy X
Breath Of Fire III
The Legend Of Zelda: A Link To The Past
The Legend Of Zelda: Ocarina Of Time
The Legend Of Zelda: Majora's Mask
The Legend Of Zelda: The Wind Waker
Super Metroid
Metroid Prime (still haven't gotten that damn 100% scan thing )
Metroid Fusion
Animal Crossing

All of those are very addictive games (to me).