25. Back to the Future
As fans will remember, Back to the Future sees Marty McFly successfully travel back in time, uniting his parents, saving their relationship and ensuring he continues to exist in the future. So, how come Marty’s parents don’t remember him? Surely Marty’s mum and dad would have eventually twigged and come to recognize him as the man who set them up in the first place? Apparently not.
Image Source: NME.com