Funny post on Clientcopia: 'At our facility we recently changed our hours from 8am to 4pm. A man comes in at 3:50pm. and says "Oh I see you close at 4 now, does that mean 'I' have to leave at 4?"'
Here's another Clientcopia post from someone who worked at a photo store.
Here are the top 20. If you're a designer of any kind you will especially like this site.