Any time George and Benny share a tender moment. They're rare and that's what makes them beautiful.
The final episode as a whole.
George Telling Carmen that he loves her just as much as Max.
George throwing Angie a vow renewal ceremony.
To elaborate; George takes over arranging the ceremony for her. He then has his boss pretend to get married and hire Angie to plan it, instructing him to take all her suggestions, resulting in a wedding full of everything she wants. All the while, George shows off a ton of spectacularly bad ideas for the ceremony, acting like he really plans on doing them. On the day of the ceremony, Vic shows up just when Angie's panicking that the supposed bride and groom aren't there, holds out a bouquet, and explains everything to her.
Seeing the entire Lopez-Palmero family (and Ernie) hanging out and having fun at the beginning "George's Relatively Bad Idea" is really heartwarming, especially considering what they're usually like. Even their sarcasm is light-hearted and friendly!
George: (after listing dinosaurs on a quiz question asking which one was a meat-eater) C'mon mom, think back! Which one did you fight for food?
(Benny rolls her eyes)
Linda: None, they all died when your head blotted out the sun!
(Everyone laughs and George rolls his eyes)
Benny: Now that's what it feels like to be a proud mother!