Jay Miller of Wine Advocate, notes the following about Paul Hobbs in Argentina.
Vina Cobos is the Argentina winery of the renowned Paul Hobbs, best known for his namesake wines from California’s North Coast. Hobbs began consulting in South America in 1988 and, early on, became involved with Nicholas Catena in the startup of that winery’s Chardonnay program. In 1998 he temporarily left his consulting projects to start Vina Cobos with the first vintage coming in 1999. In 2005 Vina Cobos constructed its own winery.
Some of the malbecs and cabernet sauvignons from this winery in 2006 were rated as high as 99 points. We have the 2006 Cobos Bramare Malbec, Marchiori Vineyard (96-99 pts WA) along with the 2006 Cobos Malbec, Marchiori Vineyard (99pts WA). The Bramare is partially estate fruit with some being sourced from the Lujan de Cuyo region of the Mendoza province of Argentina. We've also acquired a case of the Bramare Cabernet (not rated), though the 2005 received 94 points.
If you're interested, a link to the Argentinian Red section of our website is here.
A really good article on Argentina and wine from CNN is here. It includes a discussion of Paul Hobbs.