Cheat Codes:
Master Cheat: At the main menu press L, R, L, R, X, X, Y, Y
Unlimited Batarangs: At the main menu press L, R, White, Y
Unlimited Electric Batarangs: At the main menu press L, R, B, White, L
Unlock Bonus Characters: At the main menu press Left, Right, Down, White, L + R Triggers, Start