Some years ago I joined a small company, replacing a guy who was their only developer. He was pretty disorganised, and one of the first tasks I gave myself was to get the source code for the company's main product into a revision control system (Visual SourceSafe, I think). This turned out to be far from easy because his idea of versioning was to have multiple copies of the full source tree with the root directory named with a woman's name.
Its been a while, but I remember it took me weeks to satisfy myself that I'd identified the correct sources for the builds that were then in production.