The backfiles of several journals were added to Revistes Catalanes amb Accés Obert (RACO), the OA collection of Catalan journals, in March 2009. The additions bring RACO's totals to 232 journals and 48 participating publishers. (Thanks to Judit Bellostes.)
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.