Sorry if this is the wrong place to post this, but http://telemathea.uom.gr/ is a cool Moodle site.
-- Art
My "old" colleagues have obviously had a hand in this! 
Cool, I didn't even know this site existed!
Cool, I didn't even know this site existed!
Best thing to do is vote for it on the sites page.
Cheers from UoM Library staff.
Very nice visually, but no Moodle logo or link to Moodle.org to give credit where credit is due.