BuzzOffDatAlcohol wrote:
#1. When you have an issue with someone and you go over their head rather than speaking with them about it first
#2. When your boss talks about someone else to you or vice versa. As a supervisor you need to be more professional than that
#3. REPLY ALL FOR NO REASON. Pisses me off like no other! Or that one person who does Reply All and only says one or 2 words that are pointless

YES to all of the above.

I also have to add people with attendance problems. The people who are constantly late and/or take off at least one day a week, please get it together. Especially if you don't have children or some kind of health issue. Like really, what are you doing?