The Big Glitch: Full-Screen Glitch Video
During the Era of Display Glitches, there were a few times when the problem would get so bad the screen would flicker between glitch chaos and calm Finder, sometimes mixing and matching these two states in patterns of 8×8 squares. I would try to get screenshots of the mess, but these screenshots would always come out as a full-screen glitch pattern overlaid on a 2D color gradient, seen here.
In the interests of science, I have split this Big Glitch image into 57,600 8×8 pixel squares and assembled them into a movie. This movie runs exactly 32 minutes, so you might want to run it as background artwork, flickering and shifting ever so slowly through the digital and visual spectrum.