CanalPDA, a Spanish-language PDA info site has released an English version of their story about the weirdest Palm OS programs. You’ll have to follow the link to read about why they thought the apps were so weird, but the titles give some clue:
Voodoo
Palm Mirror
Bistromatic
FakeCall
Palmasutra
fDic
Divination
Scare The Doggy
Bubble Wrap Emulator
HAL9000