The first official trailer for Marvel Studio's action fantasy 'Thor' is now online. Directed by Kenneth Branagh the film stars Chris Hemsworth, Natalie Portman, Tom Hiddleston, Anthony Hopkins, Rene Russo, Stellan Skarsgard, Jaimie Alexander, Kat Dennings, Ray Stevenson, Josh Dallas, Tadanobu Asano, Idris Elba, Clark Gregg, and Colm Feore. READ MORE