http://www.savefile.com/projects.php?pid=786317
If you follow the link you'll find a live, mostly acoustic set Radiohead (well, Thom and Johnny) did for some French tv show while promoting Hail to the Thief. Don't worry, it's not dominated by HTTT songs. It's been split into separate downloads for each song they perform, in mpg format (each song is around 40mb). It's a really fantastic set and the songs are in some casers very different to their album counterparts. Enjoy!