I have got an absolutely photographic memory, particularly for anything numerical, chronological or sequential, but also for finer detail in some well known criminal cases, if I was interested in the case to begin with (Madeleine McCann springs to mind).
Not bad - they say as you age, you remember more things from longer ago. However, I have so much to try to keep tabs on, what with work and other activities, if I didn't write it down, it would be gone.