This was a great episode. Rick's two-part confrontation with Shane-- with a knock down, drag out in the middle-- and Lori's confrontation with Andrea are prime examples of what makes this show great. And they didn't shrink back from acknowledging that Andrea, as crazy and unpleasant as she is, was right about the kid needing to face the reality of death before knowing that she wants to live.
And zombies with no bite marks-- interesting.
Did zombie movies just not exist in this universe or something? I'm beginning to think that's the case since they haven't even considered finding a mall yet.
I think, with the exception of comedies, all zombie movies and stories have assumed that no zombie movies and stories have existed.