My boss is the classic micromanager, she has to know everything that's going in in both the department and the company I work for (a public housing agency). She can't stand not being in control of what's the agency is doing, even if it's not her department...case in point last week she went to a Unix training seminar on a software product she never uses, had no familiarity with, and didn't use in her department. She refused to send the 2 people that extensively used the software to the trainingclass because she needed to be in control. I asked her what she learned in the training (I don't use the software either, but as the network administrator, I pushed for the other 2 to go) and when she planned to train the 2 users on the changes in the software. She just mumbled and said she would have to look at her schedule.
I've found that most micromanagers are very insecure people; they have no confidence in their own abilities, therefore they think that everyone is as incompetent as theyare.
The only solution I've found is never tell them any additional information or details...it drives them crazy!