Heal

Pause the game during gameplay and press and hold L2 and then press Circle(3), Square(2), R2, R1, Up, Circle, Square. You should hear a sound to confirm proper entry of the code.

Movies and Extras 

At the main menu, hold L1 and then press Left, Right, Left, Down, Up, Down, R1, Circle, R2, Square. Go to the options menu and for a Movies and Extras menu.

Level skip 

Pause the game during gameplay and press and hold L1 and then press Circle, Left, Circle, Right, Circle, Square, Left(2), Right, R2.. You should hear a sound to confirm proper entry of the code.