Oops, looks like I over-wrote my first Bubbles story with my second (click "add your own" again - don't just hit back and type a new one!).
Here it is again...
"Bubbles" (not her real name, but how we refer to her), our company's former marketing consultant, was in the office alone with me one day. I was distracted by her swearing at her PC. Her PC didn't seem to be frozen, because her mouse was working, but she couldn't type anything.
I walked over, asked her to move her chair, crawled under her desk, and plugged her keyboard back in, as she had kicked it out of the back of the box.
"Wow," she said as I walked back to my desk, "how did you know how to fix it so quickly?"
"Oh, someone else had the same problem last week, so I... wait a minute... it was you!" The memory came flooding back - we had acted out _exactly_ the same scene less than a week earlier and she had no recollection of it.
She had the memory of a goldfish.