One of the famous cases is actress is Marilu Henner from “Taxi.” She's one of only 20 people who has hyperthymesia.
Hyperthymesia is a syndrome that allows one to remember details of their everyday life for years. While this might seem advantegeous, there is a huge downside. The problem with the syndrome is that people who have it have a hard time living in the present, because their minds are constantly remembering and living in the past.
Marilu Henner has hyperthymesia and says she can remember the details of her everyday life since she was 11 years old. She was featured on a “60 Minutes” episode for her superior memory capabilities. The first patient diagnosed with this condition said that the memories were a burden, because they came to him as a constant and unstoppable stream.