Here's a list of videos and slide decks for Drupal internationalization / localization talks over the last couple years. Enjoy!

Videos and slides for Drupal 7 internationalization (2011 and 2012)

• Don't Get Lost in Translation: Multilingual Site Building with Drupal 7 by Suzanne Kennedy at DrupalCamp NYC, December 2011
• Don't Get Lost in Translation: Multilingual Site Building with Drupal 7 by Suzanne Kennedy at Drupal Camp Toronto, November 2011
• Multilingual sites by Gábor Hojtsy at Do it with Drupal NYC, October 2011
• Multilingual Drupal Solutions: Use Cases and Modules by Florian Loretan and Jose Reyero at DrupalCon London August, 2011
• Managing Localized & Multi-site Environments by Alex Dergachev and Andy Stynen, DrupalCon London, August 2011
• How to Create a Multilingual Site on Drupal 7, Part 1 by brightwebsitedesign, August, 2011
• How to Create a Multilingual Site on Drupal 7, Part 2 by brightwebsitedesign, August, 2011
• Building Multilingual Websites in Drupal 7 by Suzanne Kennedy (EvolvingWeb)
• Multilingual sites in Drupal 7: New features, new possibilities by Grigory Naumovets at DrupalCamp Kyiv, June 2011
• Building Multilingual Websites in Drupal 7 by Suzanne Kennedy at Design 4 Drupal (Boston), June 2011
• Drupal 7/8 Content Translation models by Gábor Hojtsy, July 2011
• Multilingual Drupal by Gábor Hojtsy at Drupalcamp Stockholm, May 2011
• Internationalization, localization and Drupal by Gábor Hojtsy at Drupal Camp Stolkholm, May 2011
• State of Internationalization in Drupal 7 by Olivier Jacquet and Jose Reyero at Drupal Developer Days (Brussels), February 2011
• Drupal's New Localization Infrastructure and Where Do You Fit In by Gábor Hojtsy, at Drupal Developer Days (Brussels), February 2011

Older Drupal i18n videos (2010 or before)

• Drupal world domination by Gábor Hojtsy at Do It With Drupal, New Orleans, December 2008