Debug mode
Enter the "Options" menu during game play and use the "Quit Game" selection. Press Left, Right, Left, Right, Left, Right, Right, Right, A at the "Yes" or "No" prompt. Enter the "Utilities" menu and select the "Test Mode" option.
Ending bonus
Complete the game and wait at the final screen of the game for a few minutes. A new screen that displays your completion time and medal will appear as a series of audio bloopers plays. Note: The faster the game is completed, the more bloopers will be played.
Hear Outtakes
After completing the game and seeing the logo at the ending, just hang tight. Soon, a screen will tell you your time and medal, then you'll get to hear some of the bloopers from three hours of audio that was recorded. The amount you will hear depends on how quickly you finished the game.