One of those films that you like it or hate it.

The director basically pieces together different footages, and try to tell a "coherent" story about aliens, in about 10?! chapters ... it does have some messages/foot for thoughts ...

If you like the story, you will applaud him for being imaginative ... 

If you do not buy the story, you will be upset that he manages to "tweak" what the original footages are about ...

Regardless of your opinion, one cannot deny that there are a few footages that are very cinematographic ...