Re: Rotated Screen
That rotation option is bloody handy when you want to put a monitor at a high location (ceiling mounted displays, etc). Apart from the mounting options it gives, most LCD monitors are setup so the polarisers give best vewability for a user whose eye angle is above the centreline of the monitor (usually 30-60 degrees)(*)
Having a high-mounted monitor "right way up" used to frequently result in displays with an unviewable contrast or with wierd colour blooming depending what angle you looked up at them from.
If you have a "wall of monitors" on your desk then the same trick makes the upper row(s) easier to deal with, without having them tilted at wild angles.
(*) How many readers just ducked their heads down below the centreline of their monitor to verify what I just said?