I used to be a palm user but switched over to PocketPC becasue of work. So here is what I have on my device:

MobileEMS - basic software for EMTs out there
PepidEMS - advanced software for EMTs amd Paramedics
Drug Reference Library
HAZMAT Reference Library
Word and Excel
Adobe Acrobat PDF reader
Maps of my area in pdf and jpg format
Games (Snails, Worms and RiverRaid)
On my memory card I have some MP3s and backup of my device.
Plus of course: notes, contacts, etc etc

I use my PDA non stop. I have couple of charges (car and home). Hope that helps.

Matt