Game Shark Codes:

All Cars Unlocked
8003CBDCffff 

All Heats - Aston Martin V8  
3003cc070007 

All Heats -Alfa Romero
3003cbfc0007 

All Heats -Aston Martin DB7  
3003cc060007 

All Heats -Audi TT  
3003cbfd0007 

All Heats -BMW 325i  
3003cbfb0007 

All Heats -Dodge Viper GTS  
3003cc040007 

All Heats -Ford Explorer  
3003cbf80007 

All Heats -Ford Focus  
3003cc000007 

All Heats -Ford Mustang Cobra  
3003cbfe0007 

All Heats -Ford Ranger  
3003cbf90007 

All Heats -Jaguar XKR  
3003cbff0007 

All Heats -Lotus Elise  
3003cbfa0007 

All Heats -Lotus Esprit  
3003cc050007  

All Heats -Shelby Cobra  
3003cc020007 

All Heats -TVR Griffith  
3003cc030007 

All Heats -Toyota Supra  
3003cc010007 

All Movies & Slideshows Unlocked  
8003CBF6ffff 

All Table Top Balloons  
80047a160000 

Always Score 200 Stunt Driver  
8004701a00c8 

Mirrorred FWD & REV  
8003cbf2ffff  

Secrets Unlocked  
8003CBF2ffff 

Unlock All Tracks-Forward  
8003CBE4ffff 

Unlock All Tracks-Reverse  
8003CBE6ffff