The "not my job" thing drives me batty. I've been here for almost 14 years, but my prior job was in a law firm, and while I worked for one practice group, it was not uncommon for the paralegal coordinator to send out emails, asking for help for other groups, either during working hours, or for OT, when something big was happening.
My current co. is one where you do YOUR job, and that's it. Helping others is not encouraged, and my own boss does as little as he can of my stuff when I'm not here. It drives me nuts. I mean, the things he doens't do take very little time, but he just is lazy and can't be bothered.
It did come back to bite him one time. Every monday, i post our weekly publication on our website. When I'm not here, he's supposed to do it. It takes 10 mintues tops. So one year at Christmas, i'm out, and he didn't do it. So on Wed, HIS boss asked him, um, are you going to do it? and he hemmed and hawed, but now he does it automatically when i'm out. hahahahah