Ideal Monitor Rotation for Programmers

This is interesting but the author considers only one degree of freedom, "roll". Equally important are "pitch" and "yaw". "pitch" is necessary to accommodate another kind of rotation, known in HCI as "slouch". "yaw" is important because sometimes your code is so elegant and impressive, that you need people walking by to see it more than you need to see it yourself. You use yaw to rotate your monitor away, toward the hallway or window.

While this article presents it in a humorous way, some air traffic control systems actually do use a diagonally rotated screen, with that "long line" being lined up with the primary approach to the airport. The setup I got to observe involved large displays that worked with stylus input. These weren't ultra-widescreen displays; they were relatively standard aspect-ratio displays, rotated at an angle.