Normally I wouldn't post about a specific query, but I honestly think this guy does not own a computer. If he did, maybe the query wouldn't be made on a typewriter.
About every 3 months or so - sometimes more, sometimes less - we get the same query from this crazy ex-army guy. After the "Dear ____" line, he launches into a 3 page, single-spaced, type-written discussion of his theory about how every single president since Roosevelt has been a Communist. All of their policies are "pro-Red," some of them gave information to the KGB, and basically we're totally screwed and we've been screwed for a while because our government is run by a shadow government in Moscow. He ends with a photocopy of his honorary discharge papers, for reasons that remain unexplained.
The second time we got it, we wrote a note saying it was the second time and we still weren't interested. Today, I wrote a little PS saying that it was the third time and we still weren't interested.
There are a class of people who buy a Writer's Digest, make a lot of photocopies, and just mail a query out blindly to every agency on the list. Then when they get rejected, they wait a little bit and send it out again. If the query hasn't changed at all we notice it. If the query is distinctive (like this guy's) we make it a point to, you know, tell him we aren't interested. The fact that he's a conspiracy nut makes it all the better, or at least more interesting.
If you work at a literary agency, have you gotten a letter from this guy?