I want a constant view of the current and upcoming datebook items on my secondary computer screen (which normally just scrolls web and system logs).
Presuming I rsync my /home/root to my big computer's disk frequently/automatically, I can read datebook.xml and draw what's inside. Here's the hack to do that (for python 2.3 with gnosis xml).
Today is green, older is purple, future is gray. The program actually writes my schedule text. I did the streaking on this image.