Marvel and director James Gunn have cast Jason Momoa to play Drax the Destroyer in Guardians of the Galaxy! Momoa is best known for his role as Conan and Khal Drogo in the first season of Game Of Thrones.
According to Latino Review the actor flew out to London to screen test on Wednesday. I guess they liked him so much that they decided he was the guy best fit for the part. It was previously reported earlier that Isaiah Mustafa, Dave Bautista, and Brian Patrick also tested the part.
The best thing Momoa has done in his career was Game of Thrones, I haven't really liked him in anything else that I've seen him in. I can however see him as Drax the Destroyer, I think Marvel made a solid choice.
Here's a little background info on the character:
A former saxophonist, Arthur Sampson "Art" Douglas and his family were killed by the Titanian Eternal Thanos while driving across the Mojave Desert. Kronos recovered Douglas' astral form and used it to create a superhuman warrior for the purpose of defeating Thanos.