1. Prepare CHOCOLATE CRUMB CRUST. Heat oven to 350°F. CHOCOLATE CRUMB CRUST: Heat oven to 350°F. Stir together 1-1/2 cups vanilla wafer crumbs (about 45 wafers, crushed), 1/2 cup powdered sugar and 1/4 cup HERSHEY'S Cocoa; stir in 1/3 cup melted butter or margarine. Press mixture onto bottom and 1-1/2 inches up side of 9-inch springform pan. Bake 8 minutes. Cool.
2. Beat cream cheese and sugar in large bowl until smooth. Add eggs, sour cream, flour, vanilla and salt; beat until smooth. Stir together 1-1/3 cups batter with melted butterscotch chips in medium bowl; pour into prepared crust. In another medium bowl, stir together 1-1/3 cups batter with melted chocolate chips; pour over butterscotch layer. Stir together remaining batter with melted white chips; stir until smooth. Pour over chocolate layer.
3. Bake 55 to 60 minutes or until center of cheesecake is almost set. Remove from oven to wire rack. With knife, immediately loosen cake from side of pan. Cool to room temperature.
4. Prepare TRIPLE DRIZZLE : Place 1 tablespoon HERSHEY'S Butterscotch Chips and 1/2 teaspoon shortening (do not use butter, margarine, spread or oil) in small microwave-safe bowl. Microwave at MEDIUM (50%) 30 seconds; stir. If necessary, microwave an additional 10 seconds at a time, stirring after each heating, just until chips are melted when stirred. Repeat procedure with 1 tablespoon HERSHEY'S SPECIAL DARK Chocolate Chips or HERSHEY'S Semi-Sweet Chocolate Chips and 1 tablespoon HERSHEY'S Premier White Chips., one flavor at a time, over top of cheesecake, if desired. Refrigerate until cold, about 3 hours. Cover; refrigerate leftover cheesecake. 12 to 14 servings.