Hideki's reaction when Kojima said nonchalant things about how he envied Hideki for having such a high-performance persocom but didn't use her to full potential. "SHUT UP WILL YOU!! CHII HAD A NAME!! DON'T LUMP HER WITH THE REST AT YOUR LEISURE!!!"
Yumi's realization that Ueda loves her for what she is.
Minoru has one when he realizes despite his initial goal when creating Yuzuki, that he really cares for her. Not because she's his sister's replacement, but because of what she is.
And then tells her. Aww.
"It's not that I love her because I want to make love with her, but I want to make love to her because I love her."
