If dieting was on your list of New Year's resolutions you may want to know which plan works best. "U.S. News & World Report" is out with a list of the best diet plans out there. The DASH diet takes top honors for the best overall diet. DASH, which stands for Dietary Approaches to Stop Hypertension, was originally created by the National Heart, Lung and Blood Institute as a way to help people lower their blood pressure. Today, the diet plan is available online at no charge.