1)When Merle and Daryla are out in the woods, arguing, and Merle sees Daryls whip-marks all over his back. VERY well acted on everyone's part.
2) When we discover Merle -- drug-using, womanizing, violent, smart-ass Merle -- is a biblical scholar to match Herschel.
That was excellent. Merle said he missed the Woodbury library. Who'd have thought it---Merle loves books.