Unacknowledged is one of the best UFO & Alien documentaries we've ever seen. The documentary by the credible Dr Steven Greer discusses a number of different UFO stories, witness testimonies and talks heavily about disclosure. For those who are unsure what disclosure actually means, quite simply its the "official" announcement that we have and currently are being visited by Aliens from other galaxies.
This documentary goes into great detail about the government cover-ups relating to all alien and UFO activity happening in the world - and how the governments are actively hiding evidence and publicly mocking those who come forward to share their UFO experiences.
A very well researched documentary and presented with official "deleted" U.S.A UFO documents and video footage; the credibility of this UFO Documentary is top tier.
If you were ever unsure about Aliens existence, or have a friend that doesn't believe in life outside of the human race.. ask them to watch Unacknowledged - it's truly amazing.