The part where the music sort of breaks wide open like the sun splitting through the clouds after a storm, at 7:32, touches me in such a deep emotional place. It reminds me, always, of the first time I laid eyes on Iain, as he walked down the platform toward me at Kings Cross Station.
Also very good if you're looking for neat things to listen to: Sigur Rós' "Staralfur." Oh, and pretty much anything else they've written.