Type in the following code to get the effect in front of it. These are entered at the title screen or main menu.

All Levels Open:
Down, up, right, left, triangle, X, square, circle.

All Gold Medals:
Down, up, left, right, trangle, X, square, circle.

Mega Points:
L2, R2, L1, R1, triangle, circle, X, square.

View Endings:
Up, down, left, left, X, square, triangle, circle.