This is a very interesting movie.
http://www.oblivionmovie.com/splashpage/index.php
Is the Tet from an ominous Alien Intelligence or a very dark form of Artificial Intelligence?
http://www.wired.com/underwire/2013/04/oblivion-movie-questions
An interesting description of an ominous or dark force that gradually consumes the positive energy of living worlds. http://www.youtube.com/watch?v=ohx7bSeD5bQ