License Plate Names
When creating a license plate, hold L+R before entering each of the following letters:

Become a biker	HAWG
Become a blind, mado-sachoism, donkey smoking a cigarette	JASS
Become a butcher that is asian	PHAM
Become a commando	M1K3
Become a famous boxer	BRUZ
Become a female punk	B00B
Become a gangster	TFAN
Become a lady who has a tatoo everywhere	TATS
Become a male punk	MNKY
Become a nasty corpse	J1MM
Become a pimp	PIMP
Become a police officer in a higher position	FATT
Become a S.W.A.T. team member	5WAT
Become a street bum	B00Z
Become a working asian	HARA
Become an asian that likes gambling	MRFU
Become Johnson the police officer	FUZZ
Become Lola	LOLA
Become your female boss	B1G1
Become your partner	ROSA
Become your partner but wearing lingerie instead	HURT_M3

Cheats
Enter these on the map screen and not during gameplay:

All Driving Skills Unlocked	Left, Right, Left, Right, A
All Fighting Skills Unlocked	Up, Down, Up, Down, A
All Gunplay Skills Unlocked	Right, Left, Right, Left, A
Bigger Car (must be in car before you enter it on the pause menu)	Down, Down, Down, A
Get all garage cars	Down, Up, Down, Up, A
Show's Where Nick Kang Is Currently At Co-ordinates	A, B, X, Y
Gives your car an overall speed increase	Up, Up, Up, A
Play as Snoop in an 1 hour challenge	Right trigger, left trigger, Dpad Up, Dpad Right, Dpad Left, Dpad Down, Left analog stick down, Right analog stick down, A, X
Unlocks all stats and weapons/moves/cars	Up, Right, Down, Left, Up, A