I thoroughly enjoyed this film when it first came to theaters a long time ago. Robin Williams almost always provides us with fun and laughter, but this story touches on serious philisophical and ethical questions. It seems to me that I saw this movie ages ago; however, it been only 9 years since its release. While I enjoyed Bicentennial Man, I never realized that the story was published in hardcover in 1976 as I had always thought that the book, The Positronic Man, had been the model for "Data" in the Star Trek Next Generation series. All of these are wonderful stories, but I do believe that if you haven't read The Positronic Man by Asimov and Silverberg that you would enjoy it. It definitely changed many of my views on life, death, and the phrase "sentient being". It is more adult book, but suitable for teenagers on up. As I will soon be 70, maybe I ought to read that book again!