Wreckin Crew

Select Menu->option->cheat and enter:

GIMMEALL : ALL LEVELS AND CARS ACTIVE
RESETALL : RESET TO GAME DEFAULTS
RESETLAP : RECORD LAPS AND TIMES RESET
KEYFOUND : FOUND ALL PADLOCK KEYS
RESETFMV : ALL FILMS RESET
CINEMAON : ALL FILMS AVAILABLE
RESETKEY : ALL KEYS RESET
KARTSON : GAME WITH KARTS
KARTSOFF : GAME WITH NO KARTS

(Information from Cheat Machine)