Perfect balance:
Enter FOCUSSED CHICKEN as a code.

All tricks:
Enter BAG OF TRICKS as a code.

Maximum reputation:
Enter COOL DUDE as a code.

Level select:
Enter TICKET TO RIDE as a code.

All bonus characters:
Enter HIGH SOCIETY as a code.

All skates and clothes:
Enter THE EMPERORS NEW CLOTHES as a code

All FMV sequences:
Enter NOW PLAYING as a code.

One trick juicebar:
Enter FULLTANK as a code