In Son of the Desert

Hohenheim accepting Trisha's marriage proposals and them telling each other their names.
Hohenheim taking Trisha to see the ruins of Xerxes
Ed guarding the drunk Mustang and telling him that he forgives him and doesn't hold Ishval against him.
Ed's liberalia has hundreds of Isvalans and all of his friends and family showing up and everyone has a good time. Roy and Ed even dance together!
Roy proposing to Edward and promising to wait for him.

In Sins of the Father

Kirah/Scar getting a fond smile when he thinks about the Elrics.
Hohenheim accepting Roy as Edward's fiancee after they have a talk about Roy's feelings for Edward.
Edward forgiving his father when Hohenheim asks to for forgiveness and renaming him.