You ain't seen nothing yet! The other morning I sent a lab technician to the Biological Stains stores to fetch 10g of a dye called Safranin. It's been known by that name since before I was born.
He returned about an hour later with a 50g jar labelled (wait for it!):
3,7-dimethyl-10-phenylphenazine-10-ium-2,8-diamine chloride
Boy, do I love our modern IUPAC names. Turned out that the stores didn't have any Safranin in stock and he had to go to the main university chemical store building. They in their wisdom, had ordered the Safranin from a chinese supplier who, quite correctly, insist on labeling the container with the IUPAC name. The stores staff can commonly be found pulling their hair out. Oh what fun we have at uni!
Just in case you think you'd never be affected by such situations be warned! The 5% acetic acid solution you put on your chips, commonly known as vinegar, has for some time been officially known as ethanoic acid under IUPAC nomenclature!