Just played with the N9 this morning again. Very sweet, the feeling of swipes on the curved screen, and especially the "news feed" of everything happening on your phone and in your social networks together. This is not an app phone, but instead a device with a refined user experience where everything fits together.
Disclaimer: I'm a long-time Maemo user and also involved in building the open source app store for MeeGo, N9 included.