Great story Amy.
Okay- so this story involves a computer, but read on...
Someone I know was doing some work with Saab UK. The company were sending out a mailshot to all the owners of the top of the range model, the 9000 Griffin.
Someone else from the advertising company they had employed was checking over the mail list and for reasons best known to himself made some alterations, intending to delete any changes made. The latter never happened so a few hundred owners received a glossy brochure and an accompanying letter which started
Dear Rich Fat Griffin Owner.
More difficult to do that with a typewriter!