Did you know that pinching the screen when in video playback mode lets you change the movie aspect ratio? You can toggle between full screen stretch and actual size.
My Nokia Link software tends to crash with "Can't Read Media" error message. This bug commonly occurs together with desktop platform crash and keeps you from syncing anything to your N9.
The easiest way to deal with it is to scan your computer thoroughly with SpyBot Search and Destroy, and uninstall and reinstall Nokia Link.
Did you know that Nokia N9 PR1.2 update brings dynamic calendar icon? It always displays the correct day of the month. Amazing it took me a while to notice. Great improvement, innit?