Sometimes we are disappointed when the adaptation is not perfectly done especially when the plot or the ending are drastically changed! I love watching films and personally it is quite interesting and convincing to read first the original stories before they hit the screen. Ironically, I have not read some of the adapted films that I loved most such like the Lord of the Rings and Harry Potter adventures series.
Last year, I watched two of the adapted films: My Sister's Keeper by Jodi Picoult and My Time Traveller's Wife by Audrey Niffenegger. Unfortunately, I was bit disappointed with My Sister's Keeper considering that the ending of story was totally changed! Overall, watching these films also enhanced our understanding about the books and get a clearer picture of the stories as a whole.