One of those SUN pizza boxes held out so long that the bearings on the drives were completely worn out, everything was moved onto a different machine and when it was powered down you could hear the harddrives have a most horrible crash. The drives would not even spin when powered up again.
I did a summer contract job at an IBM subsidiary in summer 98 or so, and I had a manager there fight me on installing Linux on some spare PCs, because he thought they should be running, y'know, SCO. A Real Unix. It already looked preposterous by then.