Lyrics from the "Make it Sweet!" album, most of which come from the game itself.
Artwork by game artist Rodney Alan Greenblat
Offers FAQs, screenshots, a discussion board, and links to reviews.
Um Jammer Lammy fan art drawn by Sarah Guilbeaux. Mostly pictures of Teriyaki Ono, with a few of Lammy, Rammy and Parappa.
Contains various hints for the game.
Official Sony of America page. Flash-based site with character biographies, screenshots and an overview of how the game works.