They are much less fully fleshed out, but Zurb Ink has some sample templates along with a whole system for responsive email design: http://zurb.com/ink/templates.php
The Zurb Ink templates are great! We use them as a base for some of our templates as well.
The process of going from the Zurb template to something you might want to actually use often means people break the responsive elements of the template -- something we're hoping to avoid with this template gallery.
Ink is cool. There are a surprising number of templates out there now, too. Brian Graves has a great site of resources with a template section at http://responsiveemailresources.com/