Bring the cheeses and margarine to room temperature. (Reserve 2 tablespoons of the cream cheese and set aside.) Add milk, green onion, pimiento, Worcestershire sauce, garlic, and hot pepper sauce; beat till combined. Cover and chill 4 to 24 hours.
Shape mixture into a ball; roll in crushed blue tortilla chips. Press whole blue and white tortilla chips for ears. Remove green apple skin except sliver of green in the center of each apple half forming the eyes. Brush with lemon juice. Make 2 indentations into the cheese ball for the eyes to rest in. Insert into the cheese ball with toothpicks on the flat side of apple halves. Cut a triangle out of the square cracker. Attach to cheese ball with some of the reserved cream cheese for the nose. Stick in the spaghetti pieces for cat whiskers. Press in the blanched almonds forming a smiling cat face.
Can chill cat cheese ball in refrigerator several hours before serving. Let stand 15 minutes. Serve with crackers.