Gerry Carr (Canonical marketing manager) just announced on the Ubuntu marketing mailing list two advertisings for the Ubuntu Server edition. Some US business and IT-related websites show the videos. Here are the videos on youtube:
http://www.youtube.com/watch?v=vkMlCeDu-0c&feature=related
http://www.youtube.com/watch?v=F6L51uZjaZU&feature=related
See the complete announce.