The actor that plays the title role in the 2011 film "Conan the Barbarian" played what role on "Game of Thrones"? 
Conan the Barbarian (2011 film):  It stars Jason Momoa in the title role, alongside Rachel Nichols, Rose McGowan, Stephen Lang, Ron Perlman, and Bob Sapp with Marcus Nispel directing. Jason Momoa:  He is known for his television roles as Ronon Dex on the military science fiction television series "Stargate Atlantis" (2004–2009) and as Khal Drogo in the HBO fantasy television series "Game of Thrones" (2011–2012).
Khal Drogo