It's too bad that Django Dash and Rails Rumble are limited to Django and Rails, respectively. There are a lot of exciting things happening in the Python community outside of Django. Ditto for Ruby and Rails.
Edit: Using Rails for Rails Rumble is optional. Awesome! Also, it isn't written in the Django Dash rules that Django has to be used for the Django dash, but doesn't say that it's optional, either.
http://blog.railsrumble.com/rules http://djangodash.com/rules/