I got sick of getting lost when making Django models, I'm also lazy and didn't want to draw entity-relationship diagrams. So I've built a reusable Django app that builds interactive ERDs straight from a django project. It even colours nodes differently based on the app that it belongs to, and if you hover over nodes it gives a complete description of the model build from the inline
@LegoStormtroopr wow man it really looks cool. I will give it a try later today. I remember there was an option to manage.py to display the DB scheme but it does not seem to be present in 1.8 anymore. Your django spaghetti looks really promising!