When I watched the movie "Pi" some years ago, I was impressed by the use of the camera looking at the actor while he was moving (accomplished by a camera strapped to the actor), which is commonly used nowadays but at that time was really innovative. I do recommend the movie but it is not for the faint of heart because of its dim and gloomy nature.
Even though many people think that what is changing the world is technology, many really mean the hardware behind that technology. But what actually drives these machines is not the hardware but the software (algorithms) that makes them do stuff. I have always thought that the revolution in technology did come from hardware improvements but the creation of more powerful algorithms is what has actually sealed the deal. And this movie talks more about the numbers behind the hardware than the hardware itself. This movie was made well before all that wave of web 2.0 came around, so there is little reference to the internet and more emphasis on the power of computers and algorithms. I consider this a good example of dystopia brought about by technology.