Hallmarks of a bad IT Manager:

They want flashy systems to make their job look important.

They change things around in order to hide previous failures.

The never get a return on an investment before they tinker with things.

They spend more per user/workstation as the system gets larger.

They never outsource to a more capable and cost effective solution.

They never communicate to management what management needs to know.

Hallmarks of a good IT Manager:

Willing to listen to a lot of ideas before picking one that satisfies a true business need.

They understand that productivity is the best measurement of a system.

The choose appropriate things to outsource and appropriate things to do themselves.

Their budgets, per user, get smaller each year. 

If something breaks, they have already thought of how to work around the problem.

They have another job to do in the company.