Spoiler
The aspect that I most liked is that somehow Oblivion manages to condense events similar to those of the entire Matrix trilogy down into one very fast paced film (from learning your world isn't a real one through to the lovers, at least seeming so at first, both sacrificing themselves in a trip to the heart of the enemy. There's also one slightly drawn out action sequence - the massacre of the Scav base by the drones - which could compare to the fight for Zion in Matrix Revolutions, although not drawn out quite as much) with a hefty dose of Philip K. Dick's Imposter thrown in (are you still 'you' if you are a clone?). As well perhaps as a couple of ironic 2001 allusions (the aliens coming to wipe everyone out, the clones as 'star children', etc).
I also very much liked the unorthodox love triangle in the film, which for such a bizarre situation managed to feel believably complicated and emotionally nuanced, especially in the moment where our hero invites one of the clones of his lover to come to the surface with him, something that would have caused no end of problems if she had accepted but was extremely touching in the offer and its inevitable refusal. And it really is her tragedy as well (even though eventually the main heroic trio turn out to be interrelated in the manner of high tragedy), as someone forced to enter into a semi-loving relationship with someone already married, and with flashes of memories of his wife as an ideal woman, multiplied by a million clones! Though that does suggest that if it had been Jack and Julia together in the pilot's module rather than Jack and his co-pilot Victoria they would have been an unstoppable husband-and-wife team. At least the tragedy of their separation allows for the chink in the armour that the Scavs are able to find and exploit all that time later.
That combined with the way that this particular clone of Jack is patrolling areas containing his memories (a quite neat subversion of the way that films often conveniently have their characters encounter significant past locations to help trigger memories (as well as being kind of a La Jetée idea)) gets explained eventually by the idea that there are clones covering all 'sectors' of the world and the film is just focusing on the one in this significant location.
Another interesting connection to Tron: Legacy would be that both feature a love story between a human and an artificial person which isn't considered something problematic or insurmountable. Instead it acts as a way of bridging two separate worlds, and saving them both.
I also very much liked the unorthodox love triangle in the film, which for such a bizarre situation managed to feel believably complicated and emotionally nuanced, especially in the moment where our hero invites one of the clones of his lover to come to the surface with him, something that would have caused no end of problems if she had accepted but was extremely touching in the offer and its inevitable refusal. And it really is her tragedy as well (even though eventually the main heroic trio turn out to be interrelated in the manner of high tragedy), as someone forced to enter into a semi-loving relationship with someone already married, and with flashes of memories of his wife as an ideal woman, multiplied by a million clones! Though that does suggest that if it had been Jack and Julia together in the pilot's module rather than Jack and his co-pilot Victoria they would have been an unstoppable husband-and-wife team. At least the tragedy of their separation allows for the chink in the armour that the Scavs are able to find and exploit all that time later.
That combined with the way that this particular clone of Jack is patrolling areas containing his memories (a quite neat subversion of the way that films often conveniently have their characters encounter significant past locations to help trigger memories (as well as being kind of a La Jetée idea)) gets explained eventually by the idea that there are clones covering all 'sectors' of the world and the film is just focusing on the one in this significant location.
Another interesting connection to Tron: Legacy would be that both feature a love story between a human and an artificial person which isn't considered something problematic or insurmountable. Instead it acts as a way of bridging two separate worlds, and saving them both.