Have you seen Tribulation 99? Its a film essay on CIA interests in Latin America, but laid over it is a si-fi plot about aliens living beneath the earth’s crust mutated by US nuclear testing and are retaliating with natural disasters, global warming and alien automatons living among us. The film is like a collage of different film grades and such; it drops a lot of names and real historical facts mixed with very fun alien nonsense. So in the end you have to find out for yourself what the truth is, its not trying to persuade you of anything, its freeing and more honest. Because "film is lies 24 frames a second"-Errol Morris If your able to get a hold of it, you should. Its a hour long, it’s a very speedy rant that has an excellent sudden ending. The first time I watched it I had to turn it off twenty minutes into it because of its intensity but in a couple days watched it about four times in a row. But there are more good examples of the fact-fiction-truth dilemma of film.

I can only get a vague recollection of super cheesy Mexican and Japanese sci-fi clips, along with random images of Ronald Reagan, John F. Kennedy and Salvador Allende when I try to remember if I've seen the film. :)

I'll have to look for it. I'm a big fan of mockumentaries. One of my favorites is Forgotten Silver Which is about forgotten New Zealand film pioneer Colin McKenzie who supposedly invented many film techniques, it also follows Peter Jackson as he looks for lost film of McKenzie's and searches for the location where McKenzie was making an epic movie.

http://www.youtube.com/watch?v=XCFX-kmAOO0