Logan Payne: A genuine emotional response from Commander Ikari.
EvangelionFan: One of the few times that Gendo actually has a care about anything.
Sailor Star Dust: I think that despite some fan opinions, Gendo's concern for Rei here is genuine. She's important to his goals and serves as the reminder of a certain somebody, but he still manages to show more concern for Rei (as a surrogate daughter of sorts) than concern for his own son.