"I, Robot" is based on a book by Isaac Asimov, which is part of the extensive and visionary Foundation series. "Robots and Empire" is a later book in this series and one of my two lifetime favorite books. I'd recommend the entire series -- it's fantastic from beginning to end!! -- although at maybe 3000 total pages, I realize many of you don't have the time even if you were interested.

I have no idea how closely the movie follows the book.