Pat Patterson, from Sun Microsystems, has released a quick proof of concept of an OpenSSO authentication plugin for MediaWiki. This could be a really useful plugin for any organization that has decided to go the Web SSO route. If you aren’t familiar with OpenSSO, and you maintain a number of applications with some form of cookie trusted mess, or multiple logins, I highly recommend checking it out.
I was actually planning on writing this extension, and haven’t had time to get to it. I’ve asked Pat if I can test, clean up, and maintain his extension in Wikimedia’s SVN.