The guy reminds of a famous poster on the arstechnica message boards (from when I still posted there). He would just write seemingly random stories and anecdotes that he felt were related to the topic of the thread. He's probably not a troll, and is most likely on some medication.
Edit: I think the handle of that guy on arstechnica was "blath", for anyone else who might have posted there.
I was hoping you were talking about BadAndy - that guy probably wrote tens of thousands of pages worth of posts there.