My new boss went to a speech where Deliverance, a kind of proxy allowing to add skin to any html output on the fly, was presented. He decided to use it right after that, no matter how young it is.

More here :

http://www.openplans.org/projects/deliverance/introduction

In theory, the system sounds great when you want a newbie to tweak your plone theme without having to teach him all the complex mechanisms behind the zope products. And apply the same theme on a Drupal web site in one row.

But I don't believe in theory, and would like to know if anybody tried this out in the real world :-)