I've recently returned from an amazing time at Drupalcon Copenhagen, and wanted to highlight some of my favorite sessions, events, and departing thoughts (this also serves as preparation for the impossible task of summarizing such an epic and comprehensive conference in 15 minutes for this week's Portland Drupal group). While I can't cover them all, the complete list of videos from Drupalcon Copenhagen can be found here.
Jeremy Keith and the Design of HTML 5Jeremy Keith, not only touched on the core functionality and concepts of HTML 5, but also spent a great deal of time focusing on the history and reasoning behind the design.