During a Radiohead concert in Prague, dozens of fans recorded video of the band, who collected the footage and had it set to the fantastic soundboard audio recording of the show. The result is a full concert video, with shots from as many angles as possible, sourced from the literal crowd. Here's the trailer:
And here is my favorite track, "Exit Music (From a Film)," though the entire set is excellent.
The band insists that this video is "strictly not for sale" and instructs you to "share and enjoy." You can download the complete set in a variety of formats here.