X Games Pro Boarder
To unlock all normal circuits, enter the password X, Circle, X, Triangle, Triangle, Square.
Control the X
While the game is loading, use the d-pad to control the spinning X.
Loading Screen Trick
At the "loading" screen, you can stop the spinning X by tapping UP repeatedly. You must play with the timing to get it right.
Play as Ollie B
On the password screen enter Triangle, X, Square, X, Triangle, O.
Super Circuit and Secret Boarders
To unlock the super circuit and secret boarders, enter the password Triangle, X, Square, X, Triangle, Circle.