I enjoyed pretty much everything that happened this season, but three scenes in particular stand out above the rest for me.
1) The whole confrontation with Andy St. John during the episode 2 climax, and the punching scene was pretty satisfying until Carley told me he has enough.
2) The scene on the street during episode 4 when you first encounter Molly, especially if you time the sequence correctly and knock her down.
Also, everything involving Molly, she really grew on me.
3) The final scene with Lee and Clementine, the feels man, the feels.
I really had hopes that Ben would do something epic for the group to make up for all of his mistakes. When he blows up and Kenny during episode 5 (assuming you didn't let him die in episode 4) really hit how people would feel during the whole Zombie Apocalypse. More feels, more feels.