I want to shout out to Aaron Conran of ExtJs, for providing me with a license for their new ExtDesigner to giveaway in my presentation. I pinged him last minute on this, and he really came through (Hope you like it Lance. Drop me your info to give back to Aaron.) For those who haven't checked it out yet, it's a fantastic tool, really well done, and more than worth the small price tag on it.
On a side note, I'm using a "work-in-progress" version of CFQueryReader in this sample. I'm in the process of refactoring to support some advanced features of Ext.Direct, and the new version will only be compatible with 3.2 and above. When I put it into SVN I'll add some notes on which revision is the cutoff for previous versions of ExtJs.
Update: I've added notes to the readme.txt file of the sample download with instructions on how to make the examples work in ColdFusion 8 as well.