Marvel "stole" the Nordic mythology and made a movie that Scandinavia never would have a budget to make even if they tried. It is a epic and extravagant effects movie where Nordic Gods are combined with science fiction. Excellent use of actors and a great new universe is introduced but the story end up a little hit-and-miss sometimes.
Never expected this to be any good but found it charming, coherent, visually impressive and often very funny - Hemsworth in particular demonstrates an admirable ability to combine both the heroic and comedic aspects of the role. Branagh is an actor's director and as a result the performances often outperform the otherwise workaday script.