While The Time Traveler's Wife isn't YA, it's a great book that was popularized, as is usual these days, by being made into a movie. My thoughts on books-into-movies is this: I love it. But I have to read the book first. It's awesome seeing characters and scenes I've read come to life, but reading scenes I've already watched isn't as intriguing.
So I quickly read The Time Traveler's Wife when the movie came out - I had already been planning on it, but the movielization (pretend that's a word, k?) pushed me to read it faster.
The book was fantastic. The writing was beautiful, the emotions intense, and the plot interesting. I generally hate time traveling, as a whole, because it's confusing and never, ever ends well. (The Butterfly Effect, anyone?) But this version of time-traveling was explained almost perfectly. It wasn't glorified as magical or unexplainable. It kind of...sucked. I mean, there were some serious downsides. It made me question myself and my opinion. Is knowing your future worth it if you lose part of yourself along the way?
The novel is told in altering point of views - Henry's and Claire's, Claire's and Henry's. I found myself almost detesting Claire's POV for half of the novel, although it bettered in the latter half. Through Henry's eyes, she seemed charming and witty and fun, and through Claire's eyes she seemed frivilous and annoying. She gets more depth much later, but I found myself wishing to stay in Henry's POV more and more often.
The way the plot was played out was awesomely intelligent. You get clues dropped, here and there, as to who Future Henry and Past Henry is, and as the book (and future) develops, both versions of Henry come together and more answers are revealed.
The movie, I found, is far more confusing than the book. If I hadn't read the book first, I wouldn't have understand a lot of the time-travelin' logistics. My movie companion had to ask me, several times, what the hell was going on. Have any of my readers seen the movie and not read the book? I'm curious as to non-readers opinion. It seems like I would have quit midway through if I hadn't already known the details.
That said, the actors were perfect for their parts. The scenes in the book held more power to me, but it was fascinating seeing them acted out. The detail in the book couldn't be translated to film, which made for some lack in substance, but it was worth watching.
If you have to choose one of the two, as usual, read the book. The only movie I've found that even comes close to the book is Pride and Prejudice. Have you ever seen one that rivals the written version?