Commercial Companies running Drupal

We have often been asked for examples of high traffic sites that run Drupal.  This is an attempt to create a running list of commercial websites.

1. Al Jazeera.  As one would expect, the democracy movement in the middle-east caused a huge spike in volume.  Drupal on Acquia cloud was able to manage the spike in traffic. See this March 11, 2011 article.  
2. The Economist magazine.
3. Popular Science 
4. Fox News
5. Lifetime TV
6. Sony Music
7. Red Hat Linux
8. Will add more as I learn about it.