$5,000
Pause the game and press X, Y, X(2), Y, click Left Analog-stick.
Full health
Pause the game and press Left, X, Right, Y, Right, click Left Analog-stick.
Full ammunition
Pause the game and press Y, Left, Y, Right, X, click Right Analog-stick.
All movies
At the main menu or while the game is paused, press Y, X, Y, X(2), click Left Analog-stick to unlock all movies.