Main Index Pablo Honey The Bends OK Computer Kid A Amnesiac Hail to the Thief In Rainbows The King of Limbs A Moon Shaped Pool Thom Yorke Jonny Greenwood Ed O'Brien Colin Greenwood Philip Selway
Thom has called this song "experimental", messing around with synthesizers and voices.
When asked on the official RH message board about who was laughing at the end, Colin replied, "it's jonny laughing at one of his own jokes as usual that he's nicked from stephen fry or some radio four light ents programme from the last thirty years."
Regarding Johnny's laugh: note the production credit for Barry Hammond - he always worked out of Chipping Norton studios, where he also did 'Pop Is Dead'. If you google him you'll find references from the 70s to the 90s of his habit of surreptitiously recording the whole session on tape, and then playing back any amusing bits of banter etc. to the band later, which is presumably where the laugh came from!