I borrowed the book from my digital library, and I really enjoyed it. A lot of the scientific descriptions and details bored me, but overall I was entertained, and I especially loved the character of Mark Watney. I was surprised, in fact, by how much I enjoyed this book - it's just not my typical read. But I was really anticipating the movie! I thought that through the magic of Hollywood and the ability of filmmakers to bring all those boring scientific details to life visually, this movie had the potential to outperform the book for me.
I brought my eldest daughter to see the movie a few months ago, in 3D no less, and I thought it was fantastic! Matt Damon was completely perfect as Mark Watney, and the rest of the casting was great, too. The action, suspense, and visual effects made for an excellent moviegoing experience! I wasn't sure if my daughter would like the show, or if it would be a bit over her head, but every time I looked over at her, I could tell she was totally into it.
So, my verdict? Book was great, but movie was even better! But you need to experience both, because both versions are just that good!