I'm another one who can remember telephone numbers, car number plates, and the names of not very well known entertainers from the 60's, but have all my important mobile numbers, passwords etc written down. Recently, my brain went fogged and I couldn't remember the pin number I'd been using for several years. I could recall all the numbers, but not in the right order. This prompted me to follow mum's lead, and use my date of birth - I know, I know, bad idea, but it works