One page on Walter Murch always seems to pop up in Google, this time when I was trying to find the name of his choice content management, the PIX System.
It's The Heliocentric Pantheon: An Interview with Walter Murch, on the Building Blog of all places. This interview discusses Murch's observations on the similarities between the Pantheon, the ratio of planetary orbits, and musical scales. Obscure but cool.
There's much more of Murch out there at Murch film at SFIF, Fog City Mavericks, Transom.org, FilmSound.org, Freshdv, SF Cutters, and Walter Murch Fan Site.