When Daryl is hallucinating about seeing his brother, his face and mouth is clean and then really dirty again (repeatedly) every other time the camera switches back to the close-up of his face.
When Daryl dismounts the horse to get the doll, his crossbow is not loaded with an arrow. But when he gets down in the creek, the crossbow is loaded. Then when mounting the horse, the crossbow is no longer loaded again.
When Daryl (Norman Reedus) is preparing to climb the hill, he uses his over shirt to bind his wound, but when he cuts the ears off of the first dead walker, he is seen wearing his over shirt, but in the next scene, when he holds up the ear necklace, the over shirt is once again around his waist.
When Daryl is trying to get to the top of the ridge and hallucinating Merle again, there is a brief shot where a perfect hole in the back of Daryl's shirt can be seen where the bolt went through him, but the skin underneath is completely clean and unbroken.
How is it possible Glenn did not see the missing Sophia in the barn full of walkers at the end of the episode?.