This will no doubt be all over the typosphere within a couple of days (we are by no means the fastest group on the internet) but so far I only see it on boingboing, where I discovered it.
Michael Winslow takes us through the history of the typewriter using only his voice and a couple of microphones. It would be cool to see the actual machines for comparison (and leaving out the carriage return bell seems like a major omission), but the faces he makes while he works are priceless.
History of the typewriter recited by Michael Winslow from SansGil—Gil Cocker on Vimeo.
I'm not sure what it says about me that I actually sat through the entire 20 minute video.