Nearly every Dallas Mexican restaurant worth a dip boasts some type of fish taco on its menu, but almost none are as good as Taco Diner's. These upscale taquerias are certainly no hole-in-the-wall treasures, but what they lack in soul they more than make up for in flavor. The fish tacos feature grilled tilapia (soaked in a delicious, tangy citrus marinade) and sliced peppers on thin corn tortillas, with the requisite trimmings on the side. We get our kicks by adding a little white cheese and a spoonful of the spicy green salsa, but hey, it's your fiesta.