Videos of all the Drupal Downunder 2012 presentations are now available on online, see https://www.youtube.com/playlist?list=PLCDB80A0209EC71E1
Also worth reviewing is the feedback from the media on the event, http://2012.drupaldownunder.org/news/media-round
Keynote by Dries Buytaert, founder of Drupal on the state of Drupal today, Drupal 8 (next major release) and the future of Drupal.