I finally saw that movie (one day before it was it in France, for more fun). I expected it to be much worse. Many ppl criticised the choice of Will Smith as the main actor, but he did very well IMO.
The movie (the story) is well balanced between what you can think of the future. The 3 laws are mostly a myth now and will never be applied as such in thinking machines (physical robots may be). But the rest is quite valid. And this issue of wether robots should take control for the safety of humanity/earth is a dense question. The answer of the movie (dunno about the original book) is quite simple and quickly chosen in the movie. Maybe another movie focused on this issue would be even more interresting !