Here are some cheats and tips for the game Monsters, Inc..
99 lives:
Hold L1 + R1, then press Circle(3), Triangle, Square, X,
Triangle during game play.
Full health:
Hold L1 + R1, then press Circle(3), Square, Triangle, X,
Triangle during game play.
Full scare meter:
Hold L1 + R1, then press Circle(3), Square(2), X, Triangle
during game play.