One of my favorites is a talk by J.J. Abrams (of Lost and Fringe fame).
In his talk, he discusses mystery and making things and imagination. I think these things are at the heart of what it takes to be a good DM. These concepts are also at the core of the OSR, by my way of thinking. He also makes come comments about the 'democratization' of movie making -- comments that also apply to the OSR.
"No community is best served when only the elite have control." -- J.J. AbramsToo much in there to excerpt -- you need to watch it for yourself. You won't regret it.