If you haven’t already seen it, you should check out the screencast for the online marking tool that Greg Wilson’s group made. Very slick stuff, and I wish the graders had a tool like that when I was in school.
Oprius has posted three new screencasts of their slick Foundations package.
Finally, the good folks of ShowMeDo have pointed me to a page to request TurboGears screencasts. Put in a call for your topic of choice.