Entering the password DISHWASHER ATTITUDE HOOKER EFFIGY will give you debug cheats, unlock all cheats in the game, and put a build date at the top of the main menu. Trying to select the Character debug mode will automatically turn debug mode off, at least in the PS2 version. To fix that, apply the below GameShark / CodeBreaker code to re-enable it.
PlayStation 2 USA code: Re-enable Character Debug Mode 0017DFF0 0000000A 2017DFF8 00000000
Entering the code I WORK FOR GOD will instantly set your health to 1.