Flip off other traffic
Press L1 + L2 or R1 + R2 during game play to flip the finger at other traffic.

Bonus Level
Press L1 + R2 at the neighborhood selection screen.

Bonus music
Press R1, Triangle, R1, L1, Circle, X, R2, L2, Square during game play to hear three additional songs. Press R1, Triangle, R1, L1, Circle, X, R2, L2, Right during game play for a fourth song. Note: The music will return to normal after the current level is completed.

Free Mode
Enter the password HANOILBKJO to play in free mode.

Give Someone the Fist
To give someone a fist, preferably a person in a car, press R1 and R2 together to do it on your right side or L1 and L2 to do it on your left side. If it is done correctly, you will hear the driver say something like "Arrest that punk!"

No Friction
To make your tires and the ground have no friction between them you must stop the bike and tap CIRCLE repeatedly but do not hold it down. If you did it right he will pedal but he won't move!!
Passwords
01 -- eflcifcgkj
02 -- iflcifccki
03 -- mflcifcokj
04 -- aflcifckkj
05 -- fhclfigcjl
06 -- flclficcil
07 -- fpclfiocjl
08 -- fdclfikcjl
09 -- kflcifcgii
10 -- oflcifccii
11 -- cflcifcoij
12 -- gflcifckij
13 -- ffclfigccj
14 -- fjclficcij
15 -- fnclfiocjj

Play As Zaskar
From the Load/Save screen enter the password FDFKFKHCJK to play as Zaskar.

Play as Pantera
From the Load/Save screen, enter the following password KFKFKFOEKJ and you will start the game with the Pantera.

Play as a Gorilla
Enter the password SAVAGEAPES to play as a Gorilla on a BMX Bike.

Play as an Alien
Enter the password XFIFTYONEX to play as an Alien on a BMX Bike.

Play as Fish
Enter FINALSDFIN as a password.

Start Game with STS-1
To start with the STS-1 bike, enter the password IFKFKFKGKJ.