Were you at blizzard when they lost their source code server and had no backups? I was there for a short time consulting around the time WC3 was released.
On a related note, I worked on Battle Chess, porting it from DOS/Amiga to Windows 3.1, and later to Windows 95 ("MPC Battle Chess"). Every few years a new producer from Interplay would call me and ask for a copy of the source code so they could rebuild it, because they lost their own copies. One of those times it was because they discovered their weekly backup tapes were all blank.