We have featured awesome Ubuntu commercials before and also some stunning user contributed Ubuntu promotional videos for Ubuntu Free Culture Showcase. Ubuntu is Humanity is of the second kind and it's more of a feel good video meant for Ubuntu users.
We have featured a number of videos on a variety of topics before that include RedHat and OpenSource promotional videos, Blender Made Movies, Firefox Ads and even Google Chrome commercials. Do watch them if you are interested. And don't forget to subscribe.