Type in during the game:

 iamacheater        Cheat mode ON
 catdebug           Debug mode ON
 moviecapture       ?
 enginedebug        ?

 In cheat mode u have the following keys:

 [Ctrl][M]          $10k everytime you press
 [Alt][Z]           Loads of skaters
 [Alt][C]           Bonus, practice and skaters