I quite liked PSO. Granted, I always had my brother to play it with. Never did the whole online thing. Four players was quite fun too, but with four going at once the game experiences some lag. Gah. Apparently you can play PSO on your computer for free these days. But anyway...

The GameCube does definitely lack numbers in the RPG category. That's why I ended up buying a PS2 like some of you others.