If you travel a lot, pick of Microsoft Streets and Trips (for the US) or Autoroute (for Europe), which includes a PPC map program as well. Then you can export maps to the PPC. It's really the only thing I use my PPC for anymore...I always have a complete, street level map of everywhere I travel. It includes hotels, restaurants, sights, etc. Extremely hand, and much smaller and more accurate than a folded map, as you can search for the address.
Oh....I also hav PocketNES, which is a pretty good NES emulator, and runs very smoothly!