Books to movies

It seems recently there have been a lot of movies made from popular YA books (Maze Runner, Hunger Games, Divergent, Ender's Game, Fault in our stars, etc.). I haven't seen a lot of them, but from what I heard, some die-hard readers have been a little disappointed in the movie versions of their favorite books. This recent Unshelved comic says it all:

I love the last sentence, "Aren't great books miracle enough?".

5/28/14: I tried watching "Odd Thomas" this weekend and had to quit after just a few minutes. It was so disappointing - the book is WAY better!