There has been an Official casting call for Kenneth Branagh’s THOR.

[WARRIORS]
A fearless warrior race, where size, strength and ferocity define a member’s rank in both the social and military hierarchy. Warriors born in this society face the harshest ecological conditions imaginable and thrive in environments where lesser creatures, including humans, quickly perishes. Theirs is a world created to cull weakness from the universe to ensure their supreme sovereignty spreads across the stars. MUST BE 6’2 OR TALLER sptv050769, NO BODYBUILDER TYPES. SAG ROLE BUT NO LINES. MUST BE COMFORTABLE WEARING PROSTHETICS.

[MARCY LEWIS]
(20) Is a college student. Aloof, jaded beyond her years, she thought her internship with scientist Kate Spelling would be an easy 6 college credits. However, she’s been stuck for months in this small New Mexico town and relegated to a wide range of unglamorous activities. Kate has been particularly hard on Marcy, making it her personal project to see that Marcy lives up to her potential. Marcy deals with her situation both by using subtle irony and by being an overt wiseass.

Marvel’s Synopsis:

Marvel Studios expands its film universe with a new type of superhero: THOR. This epic adventure spans the Marvel Universe; from present day Earth to the realm of Asgard. At the center of the story is The Mighty Thor, a powerful but arrogant warrior whose reckless actions reignite an ancient war. Thor is cast down to Earth and forced to live among humans as punishment. Once here, Thor learns what it takes to be a true hero when the most dangerous villain of his world sends the darkest forces of Asgard to invade Earth

[Source] SpoilerTV