Jing

Jing is about the best free application ever invented for educators who need to create just-in-time training. After I created an account at http://jingproject.com, I learned how to use the application and was able to create and annotate screen captures, or create desktop tutorial videos with audio, in minutes. It's so good that our distance learning office ended up purchasing a yearly license giving us extra storage space and other features that the average person will probably not need.

See a Jing on how to embed jing code into your blog here : http://theedublogger.edublogs.org/2008/05/16/embedding-jing-screencasts-into-blog-posts/