Line 13x9 inch baking pan with some of the graham crackers, breaking crackers if necessary. Pour cold milk into a bowl, add pudding mix. With electric mixer at low speed, beat until well blended, 1 or 2 minutes. Let stand 5 minutes; then blend in Cool Whip. Spread half of pudding mixture over crackers. Add another layer of graham crackers. Top with remaining pudding mixture; then top with remaining crackers. Spread cherry pie filling over top of crackers. Chill 2 or 3 hours before serving.