Personally, I'd like to see an example of an admin repeatedly harrasing a regular user failing to be put before arbcom.
I'd like to avoid bringing that up as it can only cause more bad blood. But since you opt on seeing examples, off the top of my hat: Lir and Everyking. Approach the situation with open eyes and you will see that we have a problem. Pretend that you are blind and you wont see anything. That it has happened before is not important now. What is important is to make sure it doesn't happen again, or atleast, make it much more unusual than it is now. We can do that. We have a zero tolerance policy on 3+ reverts and it has decreased the number of reverts. We should have a zero tolerance policy on administrator abuse.