Crush the cookies in a zipper style plastic bag with a rolling pin or in a food processor. Pour the cold milk into a large bowl. Add the pudding mixes. Beat with a wire whisk for 2 minutes. Gently stir in 3 cups of the whipped topping and 1/2 of the crushed cookies. Spoon into a 13 x 9 inch dish. Sprinkle with the remaining crushed cookies. Refrigerate for 1 hour or until ready to serve. * To decorate the Graveyard: Decorate assorted cookies with decorating icings or gels to create "tombstones". Stand the tombstones on top of dessert with candy corn, candy pumpkins and tiny jelly beans. Drop the remaining whipped topping by the spoonfuls onto the dessert to create ghosts. Decorate with small candies to create eyes. Makes 15 to 18 servings