I realize I'm a bit late into this conversation, but some of my pet peeves are:
Having to explain things to people when they aren't even paying attention to what I'm saying.
People peeking over my shoulder when I'm on the computer (My parents do this a lot and I've just gotten into the habit of switching tabs or doing something else just before they enter the room. As an INTJ, privacy is very important to me).
On the same note, being interrupted by acquaintances who carry out their small talk while I'm doing something productive is really annoying and completely derails my train of thought.
Also, people accidentally stepping on (and scuffing up) my shoes.