EtherBoot isn't an application you install on your Linux desktop, but if you run computers that boot over a network -- or would like to explore network booting for either fun or profit -- it is an essential free software project.
These three casual videos will introduce you to some of the people behind the Etherboot/gPXE project and some of the people and principles behind GNU/Linux networking in general.
If you are not familiar with the pace and style of free or open source software development and the people who make it happen, you are about to be amazed at the fact that these are not boringly serious individuals, but fun-loving folks whose rare F2F (Face to Face) meetings are full of laughter and camaraderie.
BoF (Birds of a Feather) sessions like this one are common at LinuxWorld and other software conferences. They usually appeal to only a small fraction of the event's attendees and get little or no publicity. But BoFs are often the most interesting event sessions there are, especially if some of your interests are a little outside the mainstream.