The Simpsons Game/Extras

Cheats for Xbox 360
Unlockable: Lisa's Outfits & Trophies: To unlock all Lisa-related costumes and trophies, insert the following code while browsing the main menu: X, Y, X, X, Y, left analog stick (press).

Unlockable: Bart's Outfits & Trophies: To unlock all of Bart's trophies and outfits, head to the game's main menu and insert the following password: Right, Left, X, X, Y, Right Thumb Stick (push in).

Unlockable: Marge's Outfits & Trophies: To unlock all of Marge's outfits and trophies, head to the main menu and insert the following password: Y, X, Y, Y, X, Right Thumbstick (press in).

Unlockable: Homer's Outfits & Trophies: To unlock all Homer-related costumes and trophies, insert the following code while browsing the main menu: Left, Right, Y, Y, X, left analog stick (press).

Cheats for Playstation 2
Cheat: Infinite Power: Head to the extras section of the main menu and insert the following code, which will give each of your characters infinite power: Circle, Left, Right, Circle, Square, L1.

Unlockable: Lisa Outfits & Trophies: To unlock all Lisa-related outfits and trophies, insert the following code while browsing the main menu: Square, Triangle, Square, Square, Square, L3 (click left analog stick).

Unlockable: Marge's Outfits & Trophies: To unlock all of Marge's trophies and outfits, head to the game's main menu and insert the following password: Triangle, Square, Triangle, Triangle, Square, R3.

Unlockable: All Movies: To unlock all in-game movies automatically, insert the following button combination at the game’s Extras menu: Square, Left, Square, Right, Circle, R1.

Unlockable: All Clichés: To unlock all of the Clichés in the game, head to the in-game extras menu and insert the following password: Left, Square, Right, Circle, Right, L1.

Unlockable: Homer Outfits & Trophies: To unlock all Homer-related outfits and trophies, insert the following code while browsing the main menu: Right, Right, Left, Left, Down, Down

Cheats for Playstation 3
Cheat: Infinite Power: Head to the extras section of the main menu and insert the following code, which will give each of your characters infinite power: Circle, Left, Right, Circle, Square, L1.

Unlockable: Lisa Outfits & Trophies: To unlock all Lisa-related outfits and trophies, insert the following code while browsing the main menu: Square, Triangle, Square, Square, Square, L3 (click left analog stick).

Unlockable: Marge's Outfits & Trophies: To unlock all of Marge's trophies and outfits, head to the game's main menu and insert the following password: Triangle, Square, Triangle, Triangle, Square, R3.