Jason,
The three Big Boxes I have are:
1.) Nicktoons: Freeze Frame Frenzy, Fairly Oddparents: Shadow Showdown, Rocket Power: Zero Gravity, and Sponge Bob: Super Sponge
2.) GT Advance, GT Advance 2, GT Advance 3, and Moto GP
3.) Sponge Bob: The Movie, Hey Arnold! The Movie, Wild Thornberries The Movie, and Jimmy Neutron Boy Genius.
EDIT: I received them as a Christmas Present. But I believe they came from a Sam's Club type place.