The concept stems from (Christian) Gnosticism, which resolved around the idea that we live in a world that isn't true, and that's created by a malicious god. The goal of gnostics is to break free from this world (and hence gain control of it).
The influence of Plato's cave allegory is clear in both gnosticism and the Matrix-movie, but with the significant difference that Plato's cave allegory meant was meant to embody the idea that reality as we perceive it is merely the shadow of the true reality, aka the world of ideas.
2. A series of movies starring Keanu Reeves, Laurence Fishburne, and Carrie-Ann Moss that is practically the definition of awesomeness, so entirely, ultimately holy in its awesomeness is it.
2. Dude, I like, don't understand those movies, because I'm a bumbling idiot who can't be bothered to think for more than 30 seconds about anything, dude...