A customer reported an error in the map used by Flight Simulator
I worked in the mapping (GIS) pipeline for MS Flight Simulator. The amount of tools we wrote just for QA was on par with what countries use for their census (I also worked on those st ESRI). I try to be of the philosophy of love and obsess about your customers, but every industry has fellows like this that make you question your beliefs. Still love them though... (mostly)