The Dallas Runaway Cart GIF
"This GIF has so many characters and subplots, it's like a Shakespearean tragedy"
Indeed. It even has its own oral history article, which contains this amazing quote:
I was hurt probably more than I’d ever been hurt before. But honestly, it was hilarious. I laughed like crazy for about 15 minutes the first time I watched that video, and for the next three or four months I’d just pull that video up and laugh. I was like, man, that cart didn’t have nobody on it, and I wondered if it was Bugs Bunny was driving it or something. There was just something hilarious about that video. I mean, nobody was even driving it!
(via Josh Marshall's twitter, which had a lot of amazing discussion of the GIF he calls "the last supper of fail")