Big Head Mode
Type 'BLAHBLAH' in cheat mode and everybody will have big heads.
Submitted by Dude. 

Cheat Mode
First press and hold L, then while holding L, press and hold right + C. Then, while holding those buttons press and hold Down + C, then while holding all of these buttons, press A, and a cheat selection mode will become available.
Submitted by Kyle. 

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