I work with several people who have a tendency to be extremely calculated in their actions and words.  They're usually a little slow and weird, but it's only because their mental filter is working at 100% capacity all the time.  They're known to be reliable, go-to people with great problem solving ability.  When you have a question about something at work, you go to these people to show you the solution.  Their answer usually has nothing to do with the problem, but everything to do with the method.  These people are painstakingly careful and observant with the little things, which makes them both loved and hated at the same time.  This is a quality I strive for.