Greek wine is very hard to find in Denver. To find any good ones, your best bet is to go to an authentic Greek restaurant. This past weekend I went to Yanni's in South Denver. Yanni himself is a Sommelier, so I knew he was going to have great wines.
Gaia, Agiorgitiko, Red Wine, 2010 $20 (Retail): Fruit forward, medium bodied wine. Even though this wine is only a couple of years old, it was more than ready to drink! This wine went well with everyone's meal; (Lamb, Moussaka, etc).(http://www.gaia-wines.gr/en/products/agiorgitiko-gaia).
If you don't live in Denver, see if your local specialty wine shop has this wine. Or, go to your favorite Greek Restaurant and ask for it!