I don't like to resort to one word review because that's not fair. (Bore does come to mind though.)
Thor might be the worst superhero of all of the Avenger movies being pumped out. This movie only managed to remind me of the bevy of high school football meat heads who harassed me and my friends. Thanks for the fun flashbacks. Bring your rye, mustard and cheese because Anthony Hopkins hams it up as usual. The man will never be kosher.
And don't be enticed to go because of Natalie Portman & Kat Dennings. They are barely in the film. Dudes, dudes, dudes, dudes, dudes.