9. Brokeback Mountain (2005)
Brokeback Mountain was originally published in 1997 not as a novel, but a short story. It follows the lives of two men who meet one summer while hired for a job together and follows the next 20 years of their lives.
The story was adapted into a full-length film that was released in 2005, with great success. It was nominated for eight awards at the Academy Awards that year, the most of the other films in the running.