My aunt, a self-employed architect and workaholic, bought a new flat screen for one of her office computers. My brother and I visited her this afternoon and, while admiring the new peripheral, he changed its resolution to one that the screen couldn't handle. The result? A black screen with the legend 'out of range' and no way to access Windows in order to change the resolution back apart from hooking the computer up to another screen.
So, basically, not only did the screen's software react to a bad resolution command in a way that rendered the computer unusable and had no obvious fix, but fucking Windows has no safeguard against the user giving such a bad command in the first place. There was absolutely no indication that the screen currently hooked up to the computer couldn't handle all of the resolutions that Windows' control panel offered, and the operating system didn't block the command once it was given.
In conclusion, I love my Mac.