"Grape Varieties you've never heard of"

This is a fun list of "Grape Varieties you've never heard of" from Jancis Robinson.  George Gavala's Katsano from Santorini made the list.

http://www.ft.com/intl/cms/s/2/4d2fedc2-133b-11e2-ac28-00144feabdc0.html#axzz29YdEV3sm

And one that pops to mind that I would add to the list is Tinta Grossa.  A Portuguese variety grown in the Alentejo.  Paolo Laureano, the famous Portuguese oenologist and consultant, is the proud owner of some of the last several hectares of this nearly extinct variety.    His eponymous winery is located in his homeland of Vidigeuira, the last known home of Tinta Grossa in the zones of Vila de Frades and Vila Alva na Vidigueira.  The winery produces a 100% Tinta Grossa ( 550 cases total production) and includes the variety in their "Ema's vineyard" blend.   Laureano believes the grape variety has the potential to develop classic wines expressive of terroir in great vintages, with plenty of black fruits, ample tannins, acidity and elegance.

http://paulolaureano.com/index.php?option=com_content&view=frontpage&Itemid=53