It had Burnout 1 and 2 with by far the nicest feeling analogue stick for controls. GameCube destroyed the Wii for me.
The Wii had a few exceptional stand outs. But the GameCube had for me a consistent flow of quality (even if the Wii's best like Super Mario Galaxy was better than the GCN offerings).
Plus Chibi Robo and some fun Japanese exclusive games I imported like Mr Driller: Drill Land.