DEFCON: The Documentary, is a celebration of 20 years of the hacker convention which was founded by Jeff Moss in 1993 and annually held in Las Vegas. The film follows the history of this occasion and the people who attend it.
A quote from the Def Con website:
Originally started in 1993, it was a meant to be a party for member of "Platinum Net", a Fido protocol based hacking network out of Canada. As the main U.S. hub I was helping the Platinum Net organizer (I forget his name) plan a closing party for all the member BBS systems and their users. He was going to shut down the network when his dad took a new job and had to move away. We talking about where we might hold it, when all of a sudden he left early and disappeared. I was just planning a party for a network that was shut down, except for my U.S. nodes. I decided what the hell, I'll invite the members of all the other networks my BBS (A Dark Tangent System) system was a part of including Cyber Crime International (CCI), Hit Net, Tired of Protection (ToP), and like 8 others I can't remember. Why not invite everyone on #hack? Good idea!
The Def Con documentary was made by Jason Scott Sadofsky and shows how this niche convention has grown into huge popularity. Today you will find all kinds of people there from diverse professions, from lawyers, government employers, journalists, researchers and hackers making it an incredibly knowledgeable place.