* AdaptationDisplacement: Few people who view the films are aware of the book, ''Literature/TheMidwichCuckoos'', existence.
* AwesomeMusic: "[[http://www.youtube.com/watch?v=bCcKozGpvUk March of the Children]]" from the 1995 version. Also considering it's '''creepy'''.
* HarsherInHindsight: [[spoiler:ChristopherReeve pulling the HeroicSacrifice to save the world at the end of the remake becomes a ''lot'' harder to watch when you remember it was his last film before the horse riding accident that paralyzed him for the rest of his tragically short life.]]
* TearJerker: Gordon Zellaby [[spoiler:saying farewell to his wife before she drives Allan to London, knowing he will never see her again. Things get even sadder when he says goodbye to his dog shortly afterward.]]