Wow that David Beazley presentation is annoying. He spends the first 10 minutes in the introduction, complaining about how he won't have enough time to go through his presentation.
I didn't watch the video, but going through the slides I was absolutely fascinated. I've been craving something new and advanced like this out of python for a while.
The talk from David Mertz on Co-routines: https://www.youtube.com/watch?v=b7R3-_ViNxk