In a large bowl, beat cream cheese and sour cream until smooth. Stir in shredded cheeses, 1/2 cup bacon, 1/4 cup pecans, onion, pimientos, pickle relish, salt and pepper. Refrigerate, covered, at least 1 hour., In a small bowl, mix parsley, poppy seeds and remaining bacon and pecans. Spread half the parsley mixture on a large plate. Shape half the cheese mixture into a ball; roll in parsley mixture to coat evenly. Cover. Repeat. Refrigerate at least 1 hour. Serve with crackers.