The film Inception

 1. The film makers want to incept you, the viewer - you are the subject and they are the dreamers, using the architect to create a world for you so they can plant a seed in your mind and make it take (or not). The "inception" in this case is the question "is this the real world?" - OK, a bit like the Matrix in that respect.

2. The idea that Cobb is actually in the real world to start with - which he might be or not ... the inception here is to CONVINCE you he is whilst incepting the seed of the idea that he might not be, which actually hits you much later (as it did me and the OP), just about the same time as the seed of the idea in your own head arises into something more solid that life itself is a dream and the movie is a way of telling you that as Cobb creates this whole thing to tell himself he is still dreaming and he needs to get back to the real world.
http://www.stara.fi/2010/07/22/inception-arvostelu