Enter the following at the Main Menu. You'll hear a cheering sound to confirm.

School Teams
L1, L1, L1, L2, L2, L2

Unlimited Money For One Season
Up, Up, Down, Left, Right, L1

Unlimited Money For Every Season
Right, Right, Left, Up, Up, Up

Max Skill for Custom Teams
Up, Up, R1, L2, Up, L1

View Credits
L2, L1, L1, L2, L2, L2

Farm Sounds
L1, L1, R2, Up, Down, Right

Clown Sounds
L1, L1, L2, R2, R1, R1

Fast Talking Announcers
L2, R2, R1, R2, L2, R2

All FMV
L2, L1, L1, L1, L2, L2

Thanks to Revolution readers Uche and Gore!