There are people that are going to hate this documentary no matter what, because it challenges the established view of the Great Pyramid of Giza, who built it, how and why.
The notion that the Great Pyramid and many other megalithic structures around the world are much older than we're lead to believe is not new. I've seen and read some compelling evidences to support this many times before. But even though I've watched and read everything I've found on that subject this movie still presented me with a lot of new facts.
It's not an easy watch, especially if you're new to this theory, so I suggest you watch it when you really have time to pay attention, and if you watch it with an open mind (or better yet, just take in the facts) I can promise you your mind will be blown!