Really freakin cool. They give you the raw data to visualize on your own, and some sample code written in Processing.

I couldn't get the Processing code to work correctly, so I ported it an OpenGL app on the iPhone...

http://www.youtube.com/watch?v=RZx-h4SbfdQ

This is awesome. Leave it to a band like radiohead to continue to push the envelope into ground breaking music video ventures like this.

This has to be among the cooler things I have seen. Really like what Radiohead, Trent Reznor, etc are doing. In the synth community, there are quite a few programmers developing synths, scripting various sampling engines etc. Hopefully more of them (the lesser known ones) will get some props for their coding skills