The whole talk is great, but the part about Free Software/Free Culture starts at 11:46
Rodney Mullen is the greatest skateboarder of all time. He invented damn near every trick in the book, and all skateboarders owe him something. He's even responsible for the design and shapes of modern decks and trucks. His contributions to the sport have enabled numerous generations of growth and innovation, and in this talk he likens the culture of skateboarding to the culture of Free and Open Source software.
I don't have much more to add other, I just wanted to highlight this video here because I think that it's completely awesome. (If you hadn't figured out yet, I myself fancy myself a bit of a skateboarder, so I really, really liked this talk.)