Lots of PIM from palm devices:
Like Traxitall or Sciral Consistency
A ebook reader supercomplete to view pdf, doc, rtf, mobipocket, palmdoc, palm ereader, PLUCKER.
Diccionary and wikepedia inside.
Comic book reader
Pim's like Shadow plan, A5, todolist, unimatrix. Handyshopper, checklist, life...