Connecting an external display to the Neo1973
USB graphics card/External beamer
You can get (lousy performing) graphics cards to connect to USB. So far they require USB2, USB1.1 will not work. So it is not an option for Neo1973.
VNC/FreeNX
With an [wiki:OpenMoko/InternetAccess internet connection] VNC or FreeNX would be possible with the display shown on a different machine. On the Neo1973 you could store the program that must be run on the client machine, connect it via USB and run the internet connection through that, too.
Built-in beamer
In the future it might be possible to add a small beamer using
[http://www.esato.com/news/article.php/id=276 Holographic projection (Estato.com)]
[http://news.bbc.co.uk/2/hi/technology/5359724.stm Lasers and mirror (BBC)]
[http://techon.nikkeibp.co.jp/article/HONSHI/20061130/124774/ Lenses and LED (TechOn)]