All Gems and Obsidians:
     After  you enter the code, use the Black button to add Obsidians,
use the different colored buttons (A,B,X,Y) to add the desired Gems.

D pad Right, D pad Left, A, B, A, B, D pad Right, D pad Left 

Refill Health/Elemental Powers:
     Hold  D pad left + push Right stick right, rotate Right stick 180
degrees  left  (Clockwise)  while holding D pad in position, Release D
pad and Right stick, A, X

Level Select/Power Select/Movie Select:
     Use  the Start button to toggle selections after you successfully
enter the code.

     Both Sticks towards each other, both Sticks away from each other,
A, B, click R stick down, click L stick down

Lights On:
     This  code makes the whole game lighted so it never gets dark. No
use  for  your  fire shield with this. You might have to cycle through
this code continuously until it works.

A, click R stick down, B, click R stick down, click L stick down 

Invincible:
     X, Black, White, R trigger + L trigger, click L + R stick down

Big Head:
     Click R stick down, R trigger, Down on D pad, Up on D pad, A

God Mode:
     Hit  X, black, white, right and left triggers together, the stick
buttons together

Save Anywhere:
     Hit white, D-Pad Up, D-Pad Down, A, B, right stick button.