Regarding part 2:
As a simple, somewhat dramatified counterpoint (intended to refute "Loose Change, 2
nd Edition", which is fine since that's where the Zetigeist producers seem to have got most of their information), I suggest watching the following video:
Link to Google VideoIn addition, regarding the first part of Zeitgeist, can anyone provide confirmation of the solar alignment they mention?
I have been unable to find corroborating informtation, but this is hardly surprising as I have no idea how to go about looking for such a thing.
The Horus link checked out, although there were a great many other ancient gods that were referenced as well. TO be fair, Horus/Osiris seems to be the earliest one(s) recorded.