Matthews Cafeteria (Tucker, Ga.) • The Rivershack Tavern (Jefferson, La.) • Monte Carlo Steak House (Albuquerque, N.M.)Guy Fieri finds local favorites from a third generation cafeteria outside Atlanta that serves Southern favorites, a Louisiana bar with a culinary school grad who's making everything from rabbit to turtle soup; and the Albuquerque, N.M. steakhouse you can enter through the liquor store.