All Levels
     Select  a bike and rider, then press Left, Up, Right, Down, Left,
Down, Right, Up, Left, Modifier Airs Button.

All Bikes
     At  the  Bike  Selection screen, press Up, Left, Down, Up, Right,
Left, Right, Modifier Airs Button.

All Styles
     At the Style Selection screen, press Left, Up, Right, Down, Left,
Down, Right, Up, Left, Modifier Airs Button.

Play as Slim Jim
     At  the  Rider  Selection  screen  in Pro Quest mode, press Down,
Down, Left, Right, Up, Up, Modifier Airs button.