Here are a few samples including some Camtasia files and images. I started using Camtasia in 2009 and in my current role I download raw files and edit them using Camtasia effects and Audacity when needed.
This short video (3:20) shows two courses that I worked on - a recent one, English 9, and my course, Algebra I. The image at the beginning shows a page of a refreshed World History Course and the first page of a presentation for an Earth Science lesson.
This was done for an English 9 course. I loved working on this ... finding the images was fun, as well as the transitions, and then syncing her audio into it.
I wound up creating icons and sharing them for use in other courses. I used PowerPoint to make them so I could easily edit them. Another course used the same idea, but as rounded squares. Colors could be changed as needed.