Someone tipped me off about a game clearance sale that is happing at my town's local liquidation store. So I went down this afternoon, and found they were selling last generation's games (GBA, GC, Xbox, etc.) at the sale price of 2 for $15.
A lot of it was crap, but there were some gems to had. Here's what I picked up:
GameCube:
The Legend of Zelda: Twilight Princess
Mario Power Tennis
Mario Superstar Baseball
Super Mario Strikers
GBA:
The Legend of Spyro: The Eternal Night
Naruto Ninja Council 2
I also took a browse around the rest of the store, and found a cool Sonic Rush Adventure wallscroll for $4.