I just got a chance to watch this master class given by Walter Murch at the Sheffield Doc/Fest. It is awesome and incredibly insightful. Walter Murch is one of the most influential editors of modern filmmaking.
Here are a few screenshots that I think are awesome:
I first heard of this video from http://nofilmschool.com/2014/02/watch-masterclass-legendary-film-editor-sound-designer-walter-murch/