All power-ups
Pause the game, then hold L1 + L2 + R1 + R2 and quickly press Circle, Square, Circle, Square, Circle, Square, Square(2), Circle(2), Square, Circle(3).

All warp gates
Pause the game, then hold L1 + L2 + R1 + R2 and quickly press Square(2), Circle, Square(2), Circle, Square, Circle(3).

All FMV sequences
Pause the game, then hold L1 + L2 + R1 + R2 and quickly press Square(3), Circle(3), Square, Circle, Square.

View credits
Pause the game, then hold L1 + L2 + R1 + R2 and quickly press Square, Circle(2), Square, Circle, Square.