Yesterday, Italy's Istituto Superiore di Sanità (National Institute of Health, or ISS) adopted an OA mandate for ISS-funded research. (Thanks to Valentina Comba.)
The policy is not yet online in Italian or English. It requires deposit of the final version of the author's peer-reviewed manuscript in the ISS repository at the time of acceptance for publication in a journal. The full text will be available by intranet immediately (apparently for ISS personnel only) and by public internet after the publisher's embargo runs (apparently 24 months max). I hope to post a link to the actual policy shortly.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.