I got the very last livescribe pen at the JavaONE 2008. The pen is nice with aluminium finish. The responsiveness is really fast- the pen reacts to user's actions immediately. The pen comes with a 6 page manual, which is amazing. At the first go I just ignored the hints "Tap here" and wondered about the nice looking icons :-). Tapping the icons, you will be able to set the date, time or hear additional information (the pen comes with speakers). I'm already curious about the Java SDK - it should come in July / June. The installation of the desktop was easy and fast as well - however it seems to be developed with .NET, what would explain the exclusive Windows availability. It is really interesting, how the user interfaces evolve in the last time. iPhone, Livescribe and Nike+. Just fresh new ideas.