This is the second single released following the release of Radiohead's latest album, Amnesiac. "Knives Out" was played rather heavily during the Radiohead concerts during the run-up to the release of Amnesiac, but what came out on the album was a soft, mellow and an absolutely great song - something the fans didn't expect. The other thing about Radiohead singles is, their magnificent B-Sides. This one is no exception, the songs "fog" (originally named "Alligators In The New York Sewers"), "Cuttooth", "Worrywort", and the extended version of "Life In A Glass House" (also on the album) live up to the reputation of those before them, drawing comparisons with their earlier great B-Sides like Polyethelene, Talk Show Host, and Bishops Robes. The song "cuttooth" from this single was supposed to be in the the album Amnesiac, but was replaced by "Hunting Bears" to keep the album's delicate balance. But none the less, another good B-Side joins the ranks of those before it (Great B- Sides which are arguably better than some songs in the album). Another great decision by Nigel Godrich. This single is a collector's item!!!