1. In a large bowl, coarsely mash beans. Stir in the onion, corn, bread crumbs, chilies, Worcestershire sauce and seasonings. Crumble beef and turkey over mixture and mix well. Shape into eight patties. Refrigerate for 1 hour. Combine mayonnaise and salsa; refrigerate until serving.
2. Using long-handled tongs, moisten a paper towel with cooking oil and lightly coat the grill rack. Grill burgers, covered, over medium heat or broil 4 in. from the heat for 5-7 minutes on each side or until a meat thermometer reads 165° and juices run clear.
3. Top with cheese; cover and grill 1-2 minutes longer or until cheese is melted. Serve on buns with toppings if desired. Yield: 8 servings.