found this article the other day, could prove interesting reading if you like rails

http://www.magpiebrain.com/blog/2005/08/14/a-comparison-of-django-with-rails/

Here is a video of Snakes and Rubies, a conference held on Chicago in 2005 where the speakers are the creators of the frameworks themselves.

http://www. djangoproject. com/snakesandrubies/

This is a good talk as they covered not only the differences of their frameworks but the similarities in their philosophies as well.