At WordCamp San Francisco I gave one of the last presentations of the (long) day, about the P2 theme. We use it a lot at Automattic: every team and project has a blog based on one. We actually have so many that there are more of these blogs than there are people at the company.
Knowing that the audience would be pretty tired, and likely looking forward to the next event (on open bar), I took an unusual approach to this presentation, and read a story.
Learn more about the P2 theme at p2theme.com.