Select "Options" at the main menu, then "Extras", and finally "Cheats". Enter one of the following codes:

Code - Effect

SAYCHEESE - 9,999 Cheese
MATTELME - All Branded
GIMMEALLYAGOT - All Nobrand
ANYONECANCOOK - All recipes
GUSTEAUVID - All videos
ITSCAKE - Any health restores to full
BOINGSPAWN - Bouncy cheese
SKYCAN - Can All Blue Cheese
PIECEOCAKE - Easy enemies
MYHERO - Enemies cause no damage
DEEPFRYER - Hard enemies
RACEISON - Multi-player races
LIMBURGER - Rat wrath