You forgot the real thing!! The CIA is controlled by the Trilateral Commission which in turn is controlled by the Masons. Nothing in the world happens except as a result of co-ordinated action by the Masons.
Seriously though, my favorite conspiracy theory is who put the Ayatollah Khomeini in power and why.
The answer is of course, the British.
Why?
To avenge themselves on teh Americans for breaking British Petroleum's oil monopoly in the 1950s when the CIA arranged to overthrow Mossadegh and install the Shah.
The British bided their time for over 20 years and when it was ripe they put Khomeini in power.
How do we know that this is true?
When the British Ambassador to Iran was asked to confirm it, he denied it!!!
And that proves it!!!