This episode won a Humanitas award.
This is the first appearance of Mr. Cantwell (Ben Stein).
This is the first and only appearance of Daniel Stern (Narrator) as Adult Kevin. This is the only episode in which Daniel Stern is creditied as being the series narrator.
Narrator: I guess I never really thought of my parents as being in love. But maybe that's the best thing for a kid -- to never have to think about it. It's just always there. Like the ground you walk on.
(Cuts to science class)
Mr. Cantwell: The surface of the earth may look stable, but it's in constant motion, shifted by molten forces below. The shapes of our continents, so familiar to us today, will shift and reform like so much pond scum.
Narrator: Mr. Cantwell had such a rosy view of the miracles of science.