Does anyone else find some acts of courtesy by others annoying?

Like when someone holds the door open for you when you are walking slow and you are about 50 feet away or when another driver gets to the 4-way stop 4 seconds before you, yet still waves you on. I got so annoyed by the later that I laid on the horn so she would go. I know it was a jerky thing to do, but I am in a particularly bad mood today (death in the family).