Axel has proven himself to be an awesome character in a short time. He's solid. His mind is clear. I can't wait to see more of him!
Lori... good God. Even with the 360 she did from S2 to S3, I never thought I could like her. But she went out like a champ. Very emotional.
T-Dog. One of the most epic deaths of the series.

in' no hesitation! Just said, "I ain't dyin' for nothin'!" and charged those

in' zombies!
Carl. Another character that was annoying in S2, but not anywhere near as bad as Lori. Still, he's becoming very likable in this season and may end up having to stabilize his father.
I was terrified that the baby was going to come stillborn. A limp newborn is one of the most heart-wrenching things to see. I'm glad he/she pulled through. Overall, this episode is just perfect. The whole twist that the one prisoner was still alive and tried to sabotage Rick n' company was great. I think Axel has solidified his spot in the group now too, which is great to see.