Wine Enthusiast wrote in 2010:

Remember five years ago, when Pinot Noir was all the rage? And prior to that, when Shiraz from Australia logged time as America’s darling red wine? And even before that, when California Merlot was the big thing? Nowadays, the hottest wine in this country is Argentinean Malbec. Dense and dark, with full-bodied richness that few other grapes besides maybe Cabernet Sauvignon, warm-climate Syrah and Tempranillo can mimic, Argentine Malbec is about seven years into a golden run during which exports to the United States have grown exponentially year after year.

They suggest 10 Malbecs worth trying. Sadly I have not tried any of them... Yet.