Le Figaro, the oldest and second-largest national newspaper in France, started using Drupal for its social features on http://www.lefigaro.fr. It is still using its old web content management system to serve its main content, but all of the social features such as comments on articles are now provided by Drupal.
I met the engineering team, including Le Figaro's Chief Technology Officer René Wallendorf, for lunch when I was in Paris last week, and they were very happy with Drupal. The integration project was delivered on time, within budget and was considerably cheaper than the alternative solutions they had investigated. All things combined, this should be a big win for Drupal, especially in France. Vraiment très cool!