Re: "The Boss handed over his key to the server room"
I remember when we lost our entire production system due to a stupid IBM FSE pulling the live power supply form the SAN rather than the failed one.
The boss' solution to prevent this was to lock the computer room and allow access only with his signature. Senior management and vendors, however, could just walk in (vendors still needed a job ticket though, same as before).
This eleganlty blocked access to the people who knew what they were doing, while still permitting the easy access of people who had a track record of causing issues. This boss was the same one who, when a company-wide survey had shown IT staff had very low faith in senior management, came to talk to us and tell us that we "shouldnt feel bad about doing so badly on the survey ... but need to work hard to improve our scores".