In this history of movies about science fiction, I would have to say that the Matrix series of 3 movies had the best scientific idea I have ever seen. The first Matrix movie came out in 1999 and was written and directed by Laurence and Andrew Wachowski, known at that time as the Wachowski brothers and who are now amazingly both transgender women, now known as Lilly and Lana Wachowski and this has to be one of the few times in the world that two brothers have both decided to become women later in life. The last two Matrix movies, Matrix Reloaded and Matrix Revolutions came out 4 years later in 2003.
The idea of the Matrix series about machines and computers taking over the world and dominating humanity is not a new one. What was the great new idea was how machines dominated humanity in the Matrix, by creating a fake world generated by computers and injected into the sleeping brains of humans who were farmed in huge warehouses where they are used as batteries to power the real machine world. The Matrix was this computer generated World, and in order to break out of it, you had to be given a special pill that breaks you out of the fake Matrix world and into the real machine world which was a dark depressing planet ruined by nuclear war.
The other original and great idea about the Matrix fake world are the abilities that human beings can have when they are in charge of injecting themselves into it by using their own computers there they can have incredible Karate skills that are a central part of many of the action scenes in all the Matrix movies. In the second movie Matrix Reloaded, there is a highway scene in the Matrix that is arguably one of the best action scenes using cars and motorcycles ever filmed in movie history. The producers actually built a highway to shoot this incredible scene that involved huge crashes with cars and tractor trailer trucks that are extremely impressive to see. Keanu Reeves is the star of all 3 of the Matrix films and these movies were the highlight of his career, both in terms of acting and financially as the Matrix trilogy has made Reeves very rich.
If you have not seen any of the Matrix movies, you owe it to yourself to see one or all of them, as they are some of the best science movies ever made.