[I've just noticed that the omniti.com re-design broke the various links from my blog to the slides I had been storing there. So I'm trying out slideshare; I'll be revisiting the slides I've given in the past and blogging one entry per presentation]
Here are the extended slides from my PDO talk. When I first put this talk together it was for a long hour slot, but conference sessions started to diminish in length and I had to pull out certain slides to avoid running over every time.
Just in case slideshare vanishes, the PDF version is also available: PDO