I think mine’s Z for Zachariah. The book is insane. A psychological survivalist thriller between a 14 year old girl and a strange man with unknown intent. The movie is… not this. They changed everything meaningful about the characters and lost all the tension. Hope someone does it properly one day. What’s your adaptation peeve?
Every Jane Eyre. They can’t translate all that subversive, complicated and problematic intellect and passion into a visual format. The costumes and settings get better and more accurate in the iterations over time and Jane and Rochester might actually BE truly ugly as written (psychologically and physically) but the astonishing beauty of the words is gone.
You’re left with a compressed, edited, compromised mess when compared to the book.