Yes I've read WWZ and RA is that but with robots, I agree. The structure of these novels--basically short stories tied within a theme--is the logical vehicle for the scope of worldwide apocalypse. It's the reading equivalent of flipping the channels. Admittedly it was a welcome relief after slogging through the concentrated minutiae of a late William Gibson novel.
Not only are you wrong about the merits of this "movie", CJA, but you're terrifyingly wrong considering your track record of great reviews. BLA is the most artless piece of propaganda I've seen in a long time, insulting on so many levels. This is just one long loud and stupid war simulation drowned in dripping melodrama, shell-shocking the audience into entertainment. An interstellar spanning species fights with primitive tactics and technology just a couple of steps ahead of ours. Right. Why bother to even have the enemy be aliens at all if you're going to have them be as dangerous as any modern army?
The Navigator: A Mediaeval Odyssey is a perfect example of a movie which sneaks in fantastical elements through the side door. Great little movie, depressing but it's set in the Dark Ages after all.
Back in the day I warned my dad not to take my kid brother to see Indiana Jones and the Temple of Doom. I was ignored and my brother had shrieking nightmares.