Arnold's Country Kitchen (Nashville, TN), Maine Diner (Wells, ME), Southern Soul Barbecue (St. Simons Island, GA)This trip, Guy's rolling out for some longtime traditions. In, Nashville, Tenn., a family-style restaurant is doing its James Beard Award-winning take on an old-school Southern classic - meat and three sides. On Saint Simons Island, Ga., see a barbecue joint where the pit master's smoking the old way - at a 1940s gas station. And in Wells, Maine, check out a local favorite from the ‘50s dishing up New England comfort food like Seafood Chowder and Lobster Pie.