Every human being is a unique and special person who doesn't quite fit into any category, of course. That said, if you've worked in IT long enough, you've probably learned to identify certain ... types. Call them Jungian archetypes, but for people you don't like. Once you've started to recognize them, you see them everywhere. We asked a host of IT pros to describe the type of IT pro they like least, and we got some colorful answers. Have you ever dealt with some of these worst people in IT? Or worse: do you recognize yourself in these descriptions? It's not too late to take another path.