No doubt the animated GIF made a big comeback in the last year or two, and it continues to be used to strange and amazing effect.

French animator/artist Micaël Reynaud has a treasure trove of animated GIF movies on his site, including the creepy/stunning version above, which is like a sweeping wave of faces churning towards you. Others are decidedly more mellow, like a split screen of sunrise/sunset, showcasing the unique nature of a handful of simple animated frames.

Fast Company Design has a nice collection of his work.