Frankly I only use it (them) for internet radio. Hoping for Maemo Leste.

The Maemo 5 supplied Internet Radio "app" never disappoints, especially not excellent buffering on slow speed connections and with the additional bonus of FM Broadcast to x number of high end tuners that will like N900 never give up after consumer society tries to spit them out and trample over.

Other than that, I just like to hold it and move through it's interface, let my mind move over the fact that there is "little to do" just like a moment in nature, It's healing for anybody suffering the "disconnection syndrome" of modern Western style life & electronic devices.