Them: Adventures with Extremists by Jon Ronson

Ronson gives a humorous and enlightening view into the world of conspiracy theorists. Keeping in mind that these adventures were pre-9/11, not much of made of Islamic fundamentalist conspiracy theories (except for the first chapter where Ronson befriends the self-styled "Osama bin Laden's man in London"). Largely the conspiracies deal with anti-Semetic theories of how the Jews run the world. And in the conspiracy theorists minds, you don't even have to be Jewish to be a Jew. You just have to be part of the small ruling group. One of the groups continually referred to is the Bilderberg group (which actually exists, but doesn't have much to do with running the world).

Other adventures include meeting with leaders of two different Ku Klux Klan sects, a man who thinks that the ruling elites are actually genetically 12 foot lizards, and Randy Weaver, the man who holed up in a cabin at Ruby Ridge, Idaho where the FBI and ATF held his family under siege.

In all, an interesting look at the paranoia of the conspiracy theorists and how one might get swept up in their passions.