It’s estimated that there are thousands of Greeks worshiping the ancient Roman Gods. Following the documentary “I Still Worship Zeus (2004)" the Ellinais association was formed in 2005. In 2006 the Greek high court granted them status as a “cultural association based on religious grounds”. Ellinais believes in world peace, ecological awareness, and the right to education. (Beliefs common to pagan or polytheistic groups). One of their goals is to find and bless ancient temples in Greece.
It sound like Ellinais is fighting for religious equality in a difficult political system. I couldn’t find much on what they are doing this year, but here are some past articles:
Greeks Free To Worship The Old Gods- the Wild Hunt, Mar 25th 2006
New Temples, Old Stones?- The Wild Hunt, Apr 17th 2006
Greek cult holds forbidden ceremony at Zeus temple- ReligionNewsBlog.com, Jan. 22, 2007
After 1,500 years, pagans plan Acropolis prayer- www.religionnewsblog.com, Aug. 29, 2008
Pagans pray to goddess Athena in rare gathering at the Parthenon-www.religionnewsblog.com, Sep. 2, 2008
Wikipedia on Ellinais (I know, I know…)
Ellinais official website (in Greek, of course!)