I don't understand why someone would say that the Gamecube was a bad console.
Here's a quick list of awesome games:
Luigi's Mansion
Pikmin
Super Smash Bros. Melee
Animal Crossing
Eternal Darkness: Sanity's Requiem (Haven't played but heard it was cool)
Mario Party 4
Metroid Prime
Star Fox Adventures
Super Mario Sunshine
F-Zero GX
The Legend of Zelda: The Wind Waker
Mario Kart: Double Dash‼
Mario Party 5
Wario World
Donkey Konga
The Legend of Zelda: Four Swords Adventures
Mario Party 6
Metroid Prime 2: Echoes
Paper Mario: The Thousand-Year Door
Pikmin 2
Battalion Wars
Donkey Kong Jungle Beat
Fire Emblem: Path of Radiance
Mario Party 7
The Legend of Zelda: Twilight Princess
And then there's also some cool third-party games:
Skies of Arcadia Legends
Tales of Symphonia
Final Fantasy Crystal Chronicles
Baten Kaitos: Eternal Wings and the Lost Ocean
Baten Kaitos Origins