IGN: Rapping with Parappa's Maker  
   In-depth report on the promotional Um Jammer Lammy gig held by Sony, including the press conference with Masaya Matsuura and Rodney Greenblat.
   http://psx.ign.com/news/9941.html

Whimsyload  
   Artwork by game artist Rodney Alan Greenblat
   http://www.whimsyload.com/

Neoseeker's Um Jammer Lammy Resources  
   Offers FAQs, screenshots, a discussion board, and links to reviews.
   http://www.neoseeker.com/Games/Products/PSX/umjammerlammy/umjammerlammy_cheats.html

Anime Lyrics: Um Jammer Lammy lyrics  
   Lyrics from the "Make it Sweet!" album, most of which come from the game itself.
   http://www.animelyrics.com/game/umjammerlammy/

Elfwood FanQuarter: fan art by Sarah Guilbeaux  
   Um Jammer Lammy fan art drawn by Sarah Guilbeaux. Mostly pictures of Teriyaki Ono, with a few of Lammy, Rammy and Parappa.
   http://elfwood.lysator.liu.se/fanq/g/u/guilbeaux2/

Pink Milk and Munchies BBS  
   An English language bulletin board for discussing Um Jammer Lammy. Includes fan art and fan stories.
   http://pub86.ezboard.com/bpinkmilk

Level 80  
   Contains various hints for the game.
   http://www.level80.co.uk/psun.htm

Um Jammer Lammy  
   Official Sony of America page. Flash-based site with character biographies, screenshots and an overview of how the game works.
   http://www.us.playstation.com/games/scus-94448.asp