Last week, I had the pleasure of speaking at Ignite Sebastopol. Started a couple years ago by O'Reilly Media, Ignite talks use an unusual, fast-paced format: 20 slides, 5 minutes, and the slides advance automatically every 15 seconds so there's no such thing as running over. It's a challenging format but it sure keeps things moving.
Here's the video, courtesy of Empire Report. The slides are available at Slideshare, but they're sort of dull without the talk track.