Unlock all Lisa's costumes and trophies
     Enter  the following code while at the main menu. Costumes can be
used and trophies viewed during the current gameplay session only.

Unlock all Lisa's costumes and trophies.
     [Square], [Triangle], [Square], [Square], [Square], [L3]

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.

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].


Unlockables

Cliches

1. Double Jump (found in The Land of Chocolate)
2. Wooden Crate (found in Bartman Begins)
3. Pressure Pads (found in Bartman Begins)
4. Temporary Power Up (found in Around the World in 80 Bites)
5. Combo Punch (found in Around the World in 80 Bites)
6. Giant Saw Blades (found in Lisa the Tree Hugger)
7. Explosive Barrel (found in List the Tree Hugger)
8. Invisible Barrier (found in Mob Rules)
9. Cracked Up (found in Mob Rules)
10. Rift Portal (found in Enter the Cheatrix)
11. Switches and Levers (found in Enter the Cheatrix)
12. Collectible Placement (found in Invasion of the Yokel-Snatchers)
13. Obvious Weakness (found in Shadow of the Colossal Donut)
14. Can't Swim (found in The Day of the Dolphin)
15. Chasm Death (found in Bargain Bin)
16. Time Trial (found in Bargain Bin)
17. Lame Tutorials (found in Game Engine)
18. Trampolines (found in Medal of Homer)
19. Escort Mission (found in Medal of Homer)
20. Enemy Spawners (found in NeverQuest)
21. Infinte Ledge Hang (found in Grand Theft Scratchy)
22. Lava (found in Big Super Happy Fun Fun Game)
23. Flying Boat (found in Big Super Happy Fun Fun Game)
24. Elemental Enemies (found in Big Super Happy Fun Fun Game)
25. Key Card (found in Game Engine)
26. Evil Genius (found in Five Characters in Search of an Author)
27. Re-Used Enemies (found in Game Over)
28. AI Running into Walls (found in Springfield)
29. Steep Slope Barrier(found in Springfield)
30. The Doors (found in Springfield)
31. Collecting Every Cliche