During the 2008 presidential campaign there was a discrepancy between how Hillary Clinton described a trip to Tuzla, Bosnia and the videos of the event. Clinton recalled being under sniper fire and running for cover, but the videos show no safety concern. The book The Invisible Gorilla talks about these types of memory errors. I found this quote from the book to be particularly funny:
Even Bill Clinton later proffered commonsense excuses for his wife’s memory lapse, claiming (incorrectly) that she made the comments late at night and pointed out (correctly but perhaps unhelpfully) that she was sixty years old.