I am preparing an intermediate GIS course for graduate and undergraduate students who have likely not been in touch with anything but ESRI software. It is an existing course in the curriculum that I will be teaching for the first time. Currently, ArcGIS is the weapon of choice for the lab sections and practical assignments.
I want to tweak the course a little to include an introduction to Open Source GIS alternatives. For now, this part of the course will only be two to four weeks (I'm thinking a kind of extended epilogue) so I won't be able to dig too deep. I hope to branch this off into a full Open Source GIS course next year, but curriculum constraints prohibit me from doing that right away.
Here's some reading I have ben considering to support the Open Source GIS part of the course, to give you an idea of what I'm (not) looking for:
- The Geospatial Desktop is a book I'd love to use for a full Open Source GIS course but is too much to cover in a few weeks. The chapter 'Survey Of Desktop Mapping Software' looks like something I could use.
- The Dekstop GIS book is of similar breadth but currently out of print.
- The Grass Book seems too focused on GRASS. I think GRASS will put students with an ArcGIS mindset off. Also, I want them to learn to appreciate the breadth of the OS geospatial software spectrum.
- 'How to go from GIS novice to Pro without spending a Dime' takes a good, practical approach to delving into OS GIS, and has good links for further reading.
- A white paper from OpenGeo talking about markets for geospatial software, and how that landscape is changing.
Can you suggest other articles and / or books that would be useful to ease students coming from an ESRI / ArcGIS background into appreciating and using Open Source alternatives?

