One of the things that makes this book a classic is that even though it was written in 1931, its themes and satire still resonate today. Huxley wrote about the "feelies", movies that appealed to the senses yet did to stimulate thinking about issues. Today, our society is filled with similar forms of entertainment, from video games to 3-d movies. In addition, we can "twitter" our every senseless thoughts to millions of people who read some of this babble religiously. We have blogs and other media outlets that allow people to think they are communicating and sharing their feelings without really getting involved with others personally. Many people spend more time talking over computer lines than talking with real people face-to-face. Huxley was very prophetic in 1931 by predicting man's insatiable appetite for entertainment.
Mass entertainment has existed in this world for thousands of years. The contests in use of weapons organized by kings and witnessed by common people have been mentioned in Mahabharata written at least three thousand years back. Colosseum built in 80 A.D. bears testimony the regular contests for mass entertainment organized in Rome nearly 200 years ago.
In today's world mass entertainment is highly developed and vastly expanded with facilities of movies and TV. Some popular movies are released simultaneously in hundreds of movie theaters simultaneously. Some events like closing and opening ceremonies of Olympics games are watched simultaneously by hundreds of millions of people all over the world.
Thus mass entertainment itself is not that novel in the novel Brave New World. What is different is the nature of mass entertainment. With use of technology the mass entertainment is able to directly arouse pleasant feelings in the viewers (or shall we say participators) of feelies. Though current technologies is not adequate to provide such entertainment, there are many experimental technologies that attempt to create real life experience by means such 3 dimensional projection of movies all around the viewers, chairs that vibrate in sync with the movements in movie, spray of water and scents.