Cinemagraphs. If you haven't heard of them, you aren't the only one. Cinemagraphs are a cross between an animated GIF and a video; a still image where only a small element is given motion.
BuzzFeed showcases 24 science fiction movie cinemagraphs from films as varied as Alien and Metropolis to The Empire Strikes Back and 2001: A Space Odyssey.
The image from The Fifth Element of the tear rolling down Leeloo's cheek is particularly affecting because the tear is the only moving item - the actress's face is rocky steady as in a still photograph.