Although I've typically had enjoyable experiences with Apple Store staff members, that doesn't seem to be the case for everybody. I've come across several stories where customers have left Apple Stores extremely upset with its employees.
One of the most interesting tales I've come across lately was featured in a recent TUAW article. If you haven't heard the story of Joe Lipari and his infamous Apple Store-Facebook-rant turned felony, you might want to keep reading...