I was watching a video I converted to play on my PSP and was getting some weird compression artifacts. You may see this sort of thing on an HDTV when the digital signal is weak or breaks up. People on screen can suddenly look like they’ve been painted random designs and colors, which is surreal in the midst of a daily-life moment. Intentional use of this technique (as in Chairlift’s Evident Utensil video) is called (by some) datamoshing. This is done by ignoring keyframes during playback. I’m guessing it’s going to get pretty popular because new special effects are few and far between these days.