The Great Wakka's Journal: Weird Spam

I've been reciving these bizarre pieces of spam who's subject line is a bunch of random non-alphanumeric characters. Never actually bothered to open one, but I would like to know if anyone else has ever actually seen this kind spam. I have several therories:
1. Japanese. The characters are Japanese, but my browser (Netscape 6) dosen't support them.
2. Freakish Computer. Maybe someone is doing this on purpose. Or his computer is infested with a virus.
3. Hotmail is on the fritz. Maybe so. It's happened before.
4. Eeevil munchkins have invaded my computer. It could happen.
5. Trick. Someone could print out a gibberish line, to entice people to open it more.
What do you think?