Scooby-Doo! Night of 100 Frights

Open All Warp Gates:
Hold L+R, and press B, B, X, B, B and X while the game is paused to open all warp gates.

Unlock All Movies:
Hold L+R, and press B, B, B, X, X, X, B, X and B while the game is paused to unlock all movies.

Enable All Powerups:
Hold L+R, and press X, B, X, B, X, B, B, B, X, X, B, X, X and X while the game is paused to enable all powerups.