Everyblock is a bit complex.

Nathan Borror's Basic Apps are pretty solid examples:

http://github.com/nathanborror/django-basic-apps

Maybe EveryBlock (considering the source)?

http://code.google.com/p/ebcode/

Depending on the audience, maybe. I've not looked at the code, but I know it has some very specific design assumptions and a number of weird corner cases baked in which might not make it a good general-purpose example.