I don't there's a lot of theories. Personally I believe that the Teachings of Islam is the right religion. They don't believe that Jesus was Gods son and just a over powered prophet. At least to my knowledge.
And as far as David Icke I believe most of what he says but there are some things he says that are just far out there that I can't say I can totally get and support.
The government is corrupt in all ways using manipulation through mind control on an entire country with power spreading all over the globe. I wouldn't be surprised to hear about them keeping something on the moon that we don't know about.
Yeah we show launches online but do we always see if something leaves the planet? But personally I've never heard any theories like that. Only things concerning the New World Order and such. Indeed our government and our world leaders are corrupt and evil.
We are fundamentally fucked, like cows let out to graze, fattening us up. The more people poor, in debt, working, families, etc...the more profit they make. We are only dollar signs to them and our needs are not in their best interests.