My thoughts:
1) This is random but you all bitched about the perfect shooting from the characters to the head...well, they went the opposite this episode and a fully automatic got about one walker per clip it seemed. Don't do it again unless the accuracy hits 100% for the rest of the season.
2) This episode (if it continues...fingers crossed) is the perfect mix of zombie threat vs. human threat. They struggled with that balance the last two seasons and now that crossroad is palatable and intriguing. I hope they keep it up.
3) Tyrese was already an interesting character to me and now he is even more. That scene was incredible.
4) The characters have clearly wised up...no more humanistic jargon. Carroll lets the women get eaten alive by walkers (good call), Tyrese beats the guy to death (definitely a good call), and multiple other times where they throw people into death. I hate to say it but this is such a great dynamic introduced. Sure, there is some humanity left but at this point it is simply a vestige of old society.
5) Carroll for President.
