It’s difficult to review a movie like Oblivion. The film is such a wide-ranging pastiche of existing science-fiction movies that you spend most of your time thinking not about what’s actually in the film, nor about what any of it might “mean”, but of all the other movies that this movie reminds you of.
So, here are the movies that came to my mind during or immediately after my first viewing of Oblivion. Maybe, if I see the film a second time, I will find all the inter-textual references less distracting and will be able to focus on the movie for its own sake. Oh, and be warned: there are lots and lots of spoilers below.