I think they did a good job making Shane look exactly as he did 8 years ago in that police car. Right down to his face glistening with sweat the way it did. For Rick's hospital bed scene, it seems they somehow used the old footage, but played with the magic of filming secrets to make him say new words. Loved seeing Hershel and Sasha too. You will be missed Scott Wilson. Overall I think it was well done.