As Wal-Mart and other supermarket chains follow the high-end grocer's lead and promote local produce, farmers are becoming the new American idols After being pushed out of the spotlight for years, the local farmer is emerging as a new celebrity. From the foothills of Maine, through North Carolina in the South, the plains of Idaho, and the lush green valleys of California, a movement to celebrate the local farmer is sweeping the country. At the forefront of the movement has been supermarket Whole Foods (WFMI), which for years has put up photos of local farmers in its stores promoting their...