What I didn't love so much:
Lori still being on alive, on the show, etc
Carl/Hershel's daughter burgeoning romance - blecchhh (age difference anyone?)
going through the cell blocks in the dark at the end there? What was the rush?
Carl just has a crush on whats-her-name. If it gets mutual...ick.
Yeah, the rush to secure the whole prison and doing stupid things. It's easy to second guess the characters after the fact, but the dark cell block mess seemed like a potential disaster from the get go...especially when you take the ONLY DOCTOR you have with you when your WIFE IS 9 MONTHS PREGGERS. No reason for Herschel to have gone with them on what amounted to a stumbling around in dark passage ways. And you'd think at this point they'd have learned to be suspicious of any corpse they haven't put down themselves, but success leads to carelessness