Since Nurse K and Monkeygirl are doing it...
A while back we got a little old lady from a nursing home. She was nonverbal, had a history of Alzheimer's and stroke, among other things. I actually don't remember what her primary complaint was. Anyhoo, at about ten-thirty at night I got a frantic call from a nurse at that nursing home.
Nursing Home Nurse: We have a small problem.
Me: Ok, shoot.
NHN: Well, um...it seems that we sent you the wrong patient.
NHN: Well, not the wrong PATIENT, just the wrong paperwork for the patient that you have.
Apparently the geniuses over at that nursing home decided that it was a good idea to put two little stroked-out ladies with almost exactly the same names IN THE SAME ROOM TOGETHER. Seriously. If the first lady's name was Marsha Jones, the roommate's name was Martha James. (The really interesting thing was that the ladies' actual names were very unusual, unlike the pseudonyms I've provided. But they were only two or three letters apart.)