NASA's Soviet UFO Dossier
It's interesting to see so much of what's being discussed today in Ufology was mentioned in an obscure 70s show from Spain. And even mentions of the moon hoax conspiracy theory before it was being discussed on the Internet. I'm glad I know Spanish and that I can understand this without the subtitles.
"You cannot rule out the possibility that an extraterrestrial civilization perhaps a million years more advanced than ours has the capability of reaching the planet Earth." ~ Dr. Michio Kaku