It may seem ironic that some of New York's best parties are thrown by a man nicknamed Dr. Doom. But on a chilly New York night, hundreds of the city's most stylish creatures flocked to celebrity economist Nouriel Roubini's swish triplex penthouse to enjoy great drinks, music, and each other's company. Here we catch Nouriel off guard and in a fabulous mood, and take a quick tour of his spacious and stylish loft.