There are a few authors like that I feel a need to go back and reread periodically--Tolkien of course, Heinlein, Verne, Wells, Poe, Stephen King, a few others. And certain runs of Spiderman and X-Men :)
I saw the movie The Bicentennial Man, starring Robin Williams, and enjoyed it. I have no idea if it was close to Asimov's story, since I never read the original story. But, I thought the movie was thought-provoking, and raised some interesting questions concerning what qualifies as "life".
Did you see AI? What did you think of that?