Based on the Book
So I've put myself on the request list for The Time Traveler's Wife by Audrey Niffenegger in anticipation of the movie (coming to a theater near you on August 14th). I'm the sort of person who likes to read the book before seeing the movie.
If you like to watch movies, based on books, you might check out some of these other science fiction film titles:
Hmm...Will Smith is in two of these. Perhaps he's an "adapted from the book" kind of person, too!