All bikes:
At the Bike select, press Left(3), Up, Down, Right(3), Circle.
All styles:
At the Style select, press Left, Left, Up, Right, Right, Down, Left, Right, Circle.
All levels:
At the Level select, press Left, Right, Left, Right, Up, Up, Up, Circle.
Unlock Slim Jim:
At Rider select, press Up, Up, Left, Left, Down, Down, Right, Right, Circle.
Unlock Amish Boy:
At Rider select, press Down, Down, Up, Up, Down, Down, Left, Left, Circle.
Unlock Lunch Lady:
At Rider select, press Up, Down, Up, Down, Up, Down, Left, Left, Circle.
Unlock Eighties rider:
At Rider select, press Left, Up, Up, Right, Up, Up, Left, Right, Circle.
Original Mode:
All bikes:
At the Bike select, press Up, Left, Up, Down, Up, Right, Left, Right, Circle.
All styles:
At the Style select, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Circle.
All levels:
At the Level select, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Circle.
Unlock Slim Jim:
At Rider select, press Down, Down, Left, Right, Up, Up, Circle.
Big skid:
In the high school go to the ramp next to the big staircase and ride up it at the right side at top speed when you reach the top push down and to the right then let go of the peddel button. If done right you can do a skid that will measure in the hundreds of feet. You might have to try a few times but it does work. I discoverd this by sheer accident, so good luck on the killer skid record!
(supplied by: vineous)
