Ever watch Ancient Aliens on the History Channel? Woooh...not the history I learned but some pretty interesting stuff.

Here are some Youtube samples

https://www.youtube.com/watch?v=-pS7Jf24dQY

https://www.youtube.com/watch?v=UBpLIR5JA2o

Or go to the History Channel's owm site: http://www.history.com/shows/ancient-aliens