Example, how to filter values in the drop down, based on row level permissions.

Djiblets is a useful set of Django helpers. For example you can easily create a custom tags, mangle URLs, show data in sortable rows and add a dynamic site configuration. I certainly will use it!

An example, how to build Tornado based web application which uses Django's ORB and forms.

Scipio is a new OpenID consumer for Django. It pretend to become a mainstream Django's OpenID consumer.

This is a very interesting and deep article. It describes how to modify templates, and how to override whole admin workflow.