I am watching the most realistic movie on Netflix now -- Fred Won't Move Out. It must have been written by us people here on AC. It is definitely written from the view of a caregiver. It is so realistic so far that I am floored. No fluff, just the hard stuff from a couple ... Oops, let me not say too much a spoil it.
I haven't seen the end yet. Wanted to come here first to let people know.
Amour is about a loving husband who's wife has Alzheimers. It's very moving (and pretty sad), but worth watching.
Away From Her is another good one with Julie Christie. It's about a man who has to institutionalize his wife with Alzheimers. She falls in love with another patient and he has to deal with that. I know that most of us living with caregiving may not feel a need to watch a movie about it - we more often want an escape movie, but if you do, these are all good films.