The last weeks I've been looking for some special things that I might want to use for criawips:
Automated Software Testing
When I found Tim's gerd I was quite impressed. Using it, you can record GObject-Events and use them to replay an application session. This could be very cool for both testing and demonstration puposes as one can easily record one session and launch the application later with that information (this way you have a much better i18n as for video recording things). Gerd is in the GNOME CVS tree (module "gerd").