erm.. missed a few

16 Color mode JJCOLOR
All items JJNV
All weapons JJGUNS
Clipping JJNOWALL
Configure controls JJCPU
Coins JJCOINS
Cycle characters (Spaz, Bird, Frog, Jazz) JJMORPH
Cycle shields JJSHIELD
Gems JJGEMS
Illuminate level JJLIGHT
Invincibility JJGOD (or JJINV)
Kill character JJKILL (JJK or JJD)
Level skip JJNEXT (or JJNXT)
Power-up JJPOWER
Quit to desktop JJQ
Rapid-fire* JJFIRE
Refill ammo JJAMMO
Return to main menu JJENDING
Sugar rush JJRUSH
Talk JJT
Toggle escort bird JJBIRD
Toggle helicopter ears and hover board JJFLY