My friend mutilated his Powerbook. While walking up the stairs in the dorm, his backpack came unzipped, powerbook fell out, hit a step, slid out of the sleeve, tumbled over the railing, bounced off the rail on the lower flight of steps, and landed corner-first on the cement floor below.
It still worked. Dented, scratched, mangled, but it still worked. Even the screen. The case was dented so much he couldn't put in the power adapter, and the CD slot was mashed shut, but he pried at it enough to charge it and used it until he had time to be without it for a while and send it in.