Here is an excerpt from Wikipedia…

The music video features clips of the faces of Thom Yorke and several other people interspersed with images of suburban landscapes. In lieu of traditional cameras, the video is made with lasers that detect the proximity of objects. This gives the video a grainy and grid-like appearance. Sheets of acrylic glass and mirrors are passed in front of the lasers to create scenes in which the image appears distorted, partially disappears, or begins to disintegrate as if being carried by wind.

The video was made on a minimal set in Florida. The data used to make the video was released under Creative Commons Attribution-Noncommercial-Share Alike 3.0 license and is available at Google Code.

And, of course, the video…