One thing I've noticed at my local supermarket (there are actually many ways I could see for improvement, but this one happens so often). I often stop to pick up a few things on my way home, between 5:30 and 6:30. So do many others. 90% of the time there is an announcement calling all till trained staff to the front end. WHY? They surely should know by now that this is one of the busier periods and have the tills covered accordingly. It doesn't help that this time also appears to be a scheduled break time and shift change.
The store is named Morrisons and is somewhat justifiably commonly called Morons.