There is nothing that pisses me off more than when people come up to my desk, plop their stuff down, and then proceed to talk to each other, and not to me, like my desk is some kind of public impromptu meeting place, there for their convenience rather than for me to do my job. I've expressed this every way I can think of that won't get me fired, or at least sent for counseling, but it doesn't make a difference, because they just don't care. Why should they? I don't matter, I'm just the fucking help.