I've been toying with the idea of writing a drama about an old man with alzheimer's disease or some form of amnesia (haven't really done proper research yet). Basically the story would be that he's in a home and even though his ex-wife and daughters have been visiting him for months now, he never recognizes them. The ex-wife and the daughters convince the old man's son to come and see him hoping maybe it will jog a memory.
The son becomes the only person that the old man remembers. We would then learn that the old man and his son have been entangled in a bitter feud for years but the old man doesn't remember any of it. He just remembers the son as a boy/when things were good.
All I've got written so far is a few drunken notes, no real details and surely not enough to start writing a script but essentially the film would be about a father clinging on to the good memory's and a son who only remembers the bad ones.
The idea actually came from a dream I had where my father was dieing. I came into his hospital room, saw him looking all sickly and bolted for the door. As I reached the handle he yelled out "I've got medical marijuana!", so I stayed. I woke up and wrote down "Big Fish, but with Pot" in a notebook before passing out again. Later that day I heard a story on NPR about a father who had suffered a head injury, got amnesia and could only remember the daughter that wanted nothing to do with him.