haha - no. I heard of it before, and it has tons of silly stuff it in. There's facts left out, there's details that are exaggerated, there's math and science that is twisted or straight wrong to fit the documentarian's claims...
This article is one of many that points out why many of these claims are
(And I'm not saying that the documentary "says" aliens made the pyramid. But they advance many of the false claims that induce people to take that route, so some sort of agenda is obviously present there.)
The whole problem is that we don't know everything about everything in the world. But people want to think scientists and historians have to know everything. So anytime you have theories that still have holes in them (which nearly all historical theories must, for obvious reasons), someone will throw out:
Even though that theory has WAY more holes in it on every level. But conspiracy theorists never worry about the myriad holes in their own theory.
That's simply false. Ancient Egypt had far more rain than today's Egypt at least up until 3000 B.C. There are
clear alternative theories for the erosion.
There's literally nothing (manmade) in Egypt that has ever been discovered that predates 5000 B.C. To use erosion lines alone to try to make up a date thousands of years earlier than all other facts provide, and then to have to explain why the Sphinx is somehow the only artifact that survived for a full 3000+ years, is really an abuse of Occum's Razor.