Watching a film like
The Sixth Sensereminds us we create our own illusions all the time. The apparent surprise endings of books aren't necessarily surprises for everyone. Why do you think that is?
Perhaps different kinds of entertainment urge us to recognize why we choose to alienate ourselves from a sense of reality. I like Max Power's idea of the "reality package." Why is it some people spend their time getting busier when they don't even believe in what they're doing? Is that where illusion becomes a delusion? Hmmm...