Giorgio Tsoukalos has been the Director of Erich von Däniken's Center for Ancient Astronaut Research for over 12 years, and has appeared on The Travel Channel, The History Channel, the Sci-Fi Channel, the National Geographic Channel, as well as Coast to Coast AM. He is the Consulting Producer of the hit television series Ancient Aliens, on the History Channel, where he also discusses his expertise and theories on the topic of ancient astronauts.
Produced by Prometheus Entertainment, the program Ancient Aliens presents theories of ancient astronauts and proposes that historical texts, archaeology and legends contain evidence of past human-extraterrestrial contact. The show has become so popular that it has been parodied on South Park, in the episode entitled "A History Channel Thanksgiving."
Here is an example of Mr. Tsoukalos discussing his theory of ancient astronauts on the History Channel television show, Ancient Aliens:
In addition, he previously was the Owner and Promoter of Pro Bodybuilding Productions. He is a graduate of Ithaca College in Ithaca, NY.
The following links provide further details on his career and background: