A video preview of the book of the same name.
Nick Rosen is the editor of the website Off-Grid.net.
One of the people interviewed is Eustace Conway. Eustace Conway walked away from civilization at age 17, and began living in the Appalacians completely off-grid. A book, (read first chapter at this link) The Last American Man, was written about Eustace and his 20 year journey.
Youtube features an interview with Eustace and some others met along the way as he traveled across America on horseback. It is advertised as a 5 part interview, but I was unable to locate the fifth part. It is a fascinating interview even missing the last part.