Bob Barr is the Libertarian candidate for President of the United States. To put this in perspective, Ron Paul is a Libertarian. Given this, Bob Barr is indeed every bit as crazy as you'd expect.
I like how un-Libertarian he is, such as - wanting to make it illegal for people in the military to be Wiccans. And how he sponsored the defense of Marriage Act, which stands in direct opposition to the Constitution. Of course this isn't necessarily strange, as Libertarianism is less a political theory than it is as a disguise for crazy racists to get together and hate black people.