Good job, Craig. Since there are many more than 3 no-no's, let me add this and the reader can decide the rankings, although IMO the first one would always be first on my list I think:
* Sacrificing your integrity -- i.e. lying, fudging test data, cheating, selectively applying rules, hiding mistakes, etc. etc.
* Failing to walk the talk. Don't tell someone how important it is to be on-time to meetings but always show-up late yourself.
* Delegating responsibility without commensurate authority, or accepting responsibility without commensurate authority.
* Failing to treat others (subordinates and superiors) as you would like to be treated.