I was pretty disappointed with the "reveal" of the walkers stuck in the mud. When the young guy came in and told Hershel "it happened again" and Hershel immediately went to find Rick I was really hoping for something interesting. We established in the pilot that some walkers retain a rote routine based on their life. I was hoping Hershel was going to show Rick that some walkers exhibit advanced functionality. Would have made for more interesting reasoning behind Hershel keeping the walkers in the barn.