YouTube revoked, then reinstated, this video from the internet-based anti-Scientology group "Anonymous."

I do not claim first-hand knowledge about Scientology, but found this discussion of its alleged esoteric beliefs interesting.

A form of communication used by the ancient world was the "Palimpsest" - a wax, papyrus, parchment or vellum page on which a message could be written, erased/scraped away and rewritten. Scholars have been able to discern on some palimpsests the faint remnants of earlier writings, and our knowledge of the ancient and medieval worlds has benefited from that scholarship. Scholars have noted more generally the similarity between Mormon temple rites and Masonic rites, between Christian religious practices and Jewish ones (not too surprising), between the Islamic prayer beads and the Catholic rosary, between Jewish/Hebrew calendar terms and those of Babylonian and other civilizations.

But one need not engage in archaelogy or spectroscopy to see that if your spiritual leader describes the "devil's" weapon of choice as hydrogen bombs and his vehicle of choice as 747-style "space planes," you are dealing with something other than divine guidance or the gradual accretion of cultures.