A documentary based on the famous book by Erich Von Daniken. It tries to build the case that humans were either created by extraterrestrials or were the technological beneficiaries of their visits. It is loaded with interesting and strange monuments, cave drawings, structures, etc. I'll admit that the findings are mysterious but Von Daniken has confessed that some of his book contained false data and manufactured examples. This is never boring though, and really makes you think about some of the commonalities between ancient and disparate cultures. I guess you could write this off as conspiracy fodder, but it's an entertaining faux-documentary.

Original name of the film is Erinnerungen an die Zukunft