Studios have been making a lot of movies based on comic books lately and, judging by the releases in the pipeline, they won't be stopping anytime soon. Thing is, the medium of motion pictures is not the optimum medium for a comic book story - a comic book is.
Thor is a prime example. Not a bad movie at all, but the superficiality of the story, the two-dimensional characters and over-the-top action scenes did nothing to draw me in to the movie. The part I liked the most was actually the CGI scenes of Odin's realm. They showed a beautiful golden city on a mountaintop - think Rome and Greece at their peaks, only bigger.
And what is with Natalie Portman being in every other movie made lately? I love her to death and she always does a great job, but take a breath, kid. Unfortunntely, in Thor, she had little chemistry with the he-man lead. That might have something to do with Thor being based on a comic book. She's much better in movies based on original screenplays. Black Swan, No Strings Attached anyone?