I am not sure about people here, but in my country most of the people never heard about TV series Ancient Aliens. The series was first launched in 2009 (the pilot episode) and in 2010 was officially broadcasted on TV.
I found out about the series this year and all I can say... Awesome!
Last night I've watch season 6, episode - Aliens and Forbidden Islands.
Do you know what is good in this documentary? - There are a lot of narrators and every person gives a different kind of view about the situations that was happen long time before this civilization exist on earth. They will also help you think deeper and start doing some research.