I sat through a few shows.
Topics covered include lizard people, demons, inter-dimensional entities, the Illuminati, satanists, finding hidden messages in the form of adding up whatever combination of numbers he finds, and how evil the industry is.
Tony Hawk is a common topic, too. He's really got into Duane's head.
Losing his son Chess at twenty fucked Duane up. I wouldn't wish that on anyone.
Duane is harmless enough, he's burned a lot of bridges, though.