NL specific

File Info; for information about traffic queues. Location aware.
Verkeersinfo; id.
Trein; for interactive information about train departure & arrival time, delays, etc. Location aware.
Bus; id. for bus.
Buienradar.nl; graphical frontend for buienradar.nl; a showing a picture of weather in X minutes; very accurate on short term.
Weerbericht; id.
Nummerbord; Look up a license plate of vehicle in national database. Gets all information about the car and its history.
Kenteken; id.
Rabo iSport; get information about Rabobank cycling team (Tour De France, Vuelta, ...)
Pathe; get information about what is running in cinema.
Aanbieding; show what is on sale in Dutch grocery stores.
Groceries; id, for US.
Tankcheck; does same, for gas stations.
Wijngids; wine reviews, great if you are in store and are lost.
Pin!; find nearest pinautomaat (ATM), location aware. (more applications exit for this purpose, like ATM Hunter)
Kranten; abstracting the Dutch newspapers for your convenience.
Zoek en Vind; yellow pages frontend (NL)
Woordvinder; find Dutch words.
Krant; online newspapers.
9292OV Pro; as on S60, check out to travel through NL using bus/train/tram/metro.
Sygic Europa; THE navigation app for S60 and iPhone IMO. In some ways better than tom!
FokSuk; interface to latest Fokke & Sukke, a Dutch comic/strip.
Tracktag; database of flitspalen (traffic cams) on S60; don't know name of app on iPhone.

Rest

Nimbuzz; it is the most feature complete IM client IMO, with a clean interface. I use it on S60 and iPhoneOS.
LogMeIn; the interface for iPhoneOS is absolutely awesome, optimized for touchscreen.
TouchTerm Pro; similar as LogMeIn. Supports gestures.
FTPOnTheGo; again, just a feature complete FTP client, but optimized for screen size and touch screen.
E-Numbers; conveniently search in database of E-numbers (European numbers for additives used in food)
Berlin City; check the tube data for Berlin.
eBay; ...
Anatomy; visualized information about body parts etc.
MewSeek; touchscreen optimized SoulSeek client (in some ways worse than museek-plus).
Sushipedia; sushi restaurant reviews!
Google Earth; ...
Go Go Go; check F1 data/news.
Translator; cannot live without a good, touchscreen optimized interface for translating languages.
Dual Level, MultiLevel; use accelerometer to see if sth is placed straight (don't know how to explain this in English)
Shazam; use mic to easily know what song is played on radio or where ever.
Jokes; touchscreen optimized application to access tons of fortune quotes.
FlowChat; IRC client optimized for touchscreen.
Uefa.com; get football (non-american football) news.
SocialBeacon; neat interfaceto controol socail netowkring site.

Myst; as it says, EA ports games to iPhoneOS.
Zen Bound; touchscreen optimized puzzle game.
Tap Tap Revenge; id.
NFSU; ricing.. err racing on iPhoneOS.
Moonlight; 3d majong, optimized for touchscreen.
removeEm; SameGame
Rummikub; the classic game...
Monkey Island: SE; ..
Spore: ...