Well, there was that case maybe ten years ago of the nuclear carrier that had to be towed back to port after a BSoD killed it dead in the water; its control systems all ran Windows.
http://en.wikipedia.org/wiki/USS_Yorktown_(CG-48)#Smart_ship...
Wow. Reading more of the wiki article (and linked sources) reveals that the actual towing to port is a contested issue. Noone denies that a /0 error killed the whole ship though.
I mean come on, the menu option was labeled "Re-index databases". I thought it would make it go faster :)
I ended up just making something up and restoring from backup.