Hell, this almost makes up for Last Days. In the Arts & Leisure section of today's New York Times, director Gus Van Sant gives an interview in which he says "[Nirvana's] songs really sounded like falling trees and chain saws."
I've read plenty (but not everything) on Nirvana, and I swear this is the first and only time I've heard someone make such an appropriate comparison to their music. I've heard the lumberjack comparisons, and how the Northwest's gray skies and rain are evident in the sogginess and dreariness of their music, but never something so fitting as "falling trees and chainsaws."
But maybe I'm wrong.
Either way, take a listen to "In Bloom" up above and notice how the riff sounds like Douglas firs crashing to the ground. It's not lumberjack rock, it's clear-cut rock.