Along the same lines as long talker, loud breather, close talker, and man hands, I have yet another addition:  weird noise maker.  Many places I go, there's invariably a person sitting next to me who makes weird noises or does something strange.  There's a guy in my grad class who intermittently makes some sort of throaty, guttural noise.  I would feel bad for him, but I think it's intentional.  I mean I think he's doing it to clear his throat or breath through his ears or something.  But I don't really think he's clearing his throat because he doesn't make that "Sorry I make weird noises, I have an esophagus inflammation and I'll die if I don't make weird noises" face.  So I'm forced to stare inquisitively at him every time he does it, just in case I can somehow deduce what exactly he's doing.