The movie adaptation of the Marvel comic book hero of Nordic descent who symbolizes thunder, lightning, and the protection of mankind, is, without a doubt, the best adaptation of a comic book hero that I've seen. Lots of action, cool CG effects, and great casting make this a movie to see. The film was directed by Kenneth Branagh (Gilderoy Lockhart in Harry Potter and The Chamber of Secrets).
The plot is as follows: Thor, about to inherit the throne of Asgard, goes against his father Odin and confronts their ancient enemy, the Frost Giants of Jotunheim, and in doing so reignites an ancient war. Odin banishes Thor to Earth for his actions. The rest, as you can probably guess, is about Thor trying to get back to Asgard.
Thor is played by Chris Hemsworth, and in my opinion, they could not have found a better person to play the part. He looks the part of a Nordic God, all blue eyed and blond haired, and steals every scene he is in; his on-screen charm makes him completely likeable.
Also in the film are Natalie Portman (Star Wars Ep. 1,2,3, Black Swan) as a scientist studying the strange phenomenon that occurs when Thor and his kind travel through the universe, and Anthony Hopkins (Silence of The Lambs, The Wolfman) as Thor's father, Odin.
I would give this movie an 8/10. The fight scene in Asgard near the end was a bit too CG, and that took away from the movie, otherwise I would probably have given it a 9/10.