OpenID in Django
I used to have a demo of an OpenID/Django Registration project online at http://openid.rossp.org. I've scrapped it because it was sucky and a much better project, django-authopenid, is available that does the same thing with less suckage.
For prosperity, you can download my code below. I strongly recommend you don't use it in a production environment. It's probably just worthwhile using as an example of how you can, but shouldn't, glue together a handful of otherwise unrelated applications :)
Download rosspopenid.tar.gz here.