Himself - Ancient Aliens

Ancient Aliens

Guest cast, played by Jacques Vallée

Guest cast, played by Marty Lagina

Guest cast, played by Takeharu Mikami

Guest cast, played by Ramy Romany

Guest cast, played by Giulio Magli

Guest cast, played by Graham Hancock

Episode 1x01: The Evidence (Apr 20, 2010)
Episode 1x02: The Visitors (Apr 27, 2010)
Episode 1x04: Closer Encounters (May 18, 2010)
Episode 1x05: The Return (May 25, 2010)
Episode 2x03: Underwater Worlds (Nov 11, 2010)
Episode 2x05: Aliens and the Third Reich (Nov 25, 2010)
Episode 2x08: Unexplained Structures (Dec 16, 2010)
Episode 3x08: Aliens and Lost Worlds (Sep 15, 2011)
Episode 4x04: Aliens and Mega-Disasters (Mar 2, 2012)
Episode 4x10: Aliens and Dinosaurs (May 4, 2012)
Episode 5x01: Secrets of the Pyramids (Dec 21, 2012)
Episode 5x06: Secrets of the Tombs (Jan 25, 2013)
Episode 6x06: Alien Operations (Nov 1, 2013)
Episode 6x10: Aliens and the Lost Ark (Dec 6, 2013)
Episode 7x06: The Shamans (Feb 28, 2014)
Episode 8x01: Alien Transports (Jun 13, 2014)
Episode 8x02: Mysterious Structures (Jun 20, 2014)
Episode 17x02: Top Ten Mysterious Sites (Aug 13, 2021)

Guest cast, played by Robert Bauval

Episode 1x01: The Evidence (Apr 20, 2010)
Episode 1x02: The Visitors (Apr 27, 2010)
Episode 1x03: The Mission (May 4, 2010)
Episode 1x05: The Return (May 25, 2010)
Episode 5x06: Secrets of the Tombs (Jan 25, 2013)