Refrigerators, ovens, microwaves, etc. I really hate appliances that beep. It annoys me more when people have an indifference and they don't care at all. Like people who will just stand 5 feet away with the fridge door open while it is beeping. It's beeping because the temperature has gone up and it can't keep things cool. I don't understand why someone can't close the door if they're not getting anything out. I will also add an extra second on the microwave so I don't have to hear it beep. My landlord will set the timer on the oven and then forget to turn off the timer when it's done. It will just be beeping over and over with this shrill beep I can hear in my room. He won't come out to turn it off for like 5 minutes. Unless I turn it off I have to listen to it.