Also having mine for two weeks now (cyan) and I can already say that it's the best phone I ever held in my hands!

-Recorder
-Battery Usage (very useful!)
-Fahrplan
-MeeScan
-The Flashlight N9
-xskat (skat game - a not-so-perfect port by myself which I use to play online)
-File Manager Beta
-Plugins for ICQ/AIM/... etc.

However, still waiting for PR1.2 to fix the stupid battery consumption issue with POP3 :-/