If I had to go "emotional", I would say it HAS to be when Daryl decided to take over the shooting of Dale. That by far was/is the best part of the series. It was really quiet, sobbing in the background, Dale looking up at Daryl... then, "Sorry, brother".... click, fade to black. Awesome. I absolutely loved how it went down. I'm not saying I wanted Dale to die, but the way it had to happen, they did it the best way possible.