Credit: Project Gravitaur If you're seeking the best UFO documentaries, we have done a deep-dive into aliens, UAP craft, whistleblowers and psy to dig up where watch UFO docs – from "S4: The Bob Lazar Story" to "The Age of Disclosure" and more.

Jeremy Corbell is encouraged and optimistic about the first batch of alien and UFO files being released by the government ... he says the transparency here is a long time coming. The UFO expert and filmmaker joined us Friday on "TMZ Live,