Drupal sites
Metallica using Drupal
Adobe using Drupal for flex.org
Adobe just relaunched flex.org as a Drupal site. The backend of the Flex powered showcase site, http://flex.org/showcase, is also using Drupal: it communicates with the Flex front-end using the Services and the AMFPHP modules. More information available on the Adobe Flex Team blog. They are using Mollom too.
Jabber using Drupal
I've been meaning to blog about this for months. So in case you haven't noticed yet, our friends at Jabber are using Drupal for jabber.org. They are also using Mollom to protect their website against spam.
I still want my Drupal to talk to my Jabber. Think "Drupal → Mollom → Jabber/XMPP → instant messaging client" to get notifications about new comments or other important events, for a example. Lots of other XMPP-Drupal opportunities as well ...
Femina using Drupal
Drupal continues to rock the newspaper and magazine world. Femina, a women's magazine, recently switched to Drupal. Femina is owned by Edipresse, one of Europe's biggest media and communications companies. They publish more than 200 titles, including some leading European newspapers (i.e. Le Matin, Le Temps, 24 heures).
Edipresse is known to use eZ publish for many of the group's websites. In fact, Femina used to run on eZ publish as well. I don't know the details but maybe more Edipresse websites will be Drupal-ized?
Joëlle Milquet using Drupal
After Belgian Prime Minister Yves Leterme, Deputy Prime Minister Joëlle Milquet also started using Drupal. Check it out at http://milquet.belgium.be. More information in this IT Professionals article (Dutch).
RTBF using Drupal
RTBF, the national broadcasting organization of the French-speaking part of Belgium, switched to Drupal. See http://www.rtbf.be. Personally, I'm not a huge fan of the design but it must be one of the biggest Drupal deployments in Belgium. The site was built by One Agency. (Hat tip: Kristof De Jaeger.)
Universal Music using Drupal
Daniel Kruchkow, Senior Vice President Global Digital Initiatives at Universal Music Group, let me know that the Universal Music website, http://universalmusic.com, switched to Drupal a few months ago.
To quote Daniel: "We're more than happy with it and are looking forward to expanding our content and feature sets as time goes on. Our users love it."