[Saikou]

I have around 20, 25 GameCube games that I play on my Wii (backwards compatibility.)
GameCube left all of the competing consoles (Dreamcast, XBOX, PS2) in the dirt.
Melee, TS2, LotR: RotK, Zelda: WW, Zelda: TP, Pokemon Colosseum, etc, etc, etc.. all kick tons of ass to this day.
I personally think that TS2 is one of the best GameCube games, if not the best.