That a restaurant like David Chang's Momofuku Noodle Bar is making bank on a fried chicken dinner special says something about people's desire for comfort food. That some of the country's hottest chefs are opening burger joints speaks to that point too. But we're not just talking about dolled up Southern staples or upscale Americana classics, comfort food means different things to different people. Explains why ramen shops, korean fried chicken, and restaurants like Marcus Samuelsson's newly-opened Ethiopian spot, Red Rooster, are so hot.