For quite a while (nearly 2 years of development) the community that is behind Drupal project pulled together to release the new version of Drupal that is 7. One of the lacks of Drupal 6 was the admin interface which was overwhelming for some users especially if the site is delivered to the client and he has to figure out everything else from than on. This video, made by hidefweb.com, talks about the new admin interface and about the improvements of Drupal 7.