Green Hornet was amusing in places, but very mediocre in general. It should have been done as a serious, sleek action movie.
Thor improves every time I watch it. Like the first Spider-Man flick, it's not a great movie, but it is tremendously entertaining. There are sequences in Thor that get closer to bringing Jack Kirby's imagination to life than any other Marvel flick (the most Kirby-esque movie ever though is still Masters of the Universe). It needed one more set-piece in the middle (Thor mud wrestling is a poor excuse for an action scene) and a stronger depiction of Thor learning humility (serving breakfast and saying thank you to people was not enough). Plus, like so many of these movies, it has the action scenes in the wrong order. Thor and his friends versus the Frost Giants was the biggest action scene, and it was at the beginning; the biggest, most spectacular action scene should always be at the end. But anyway...Branagh was an inspired choice to direct. The interplay between Odin, Loki and Thor is strong and unique for a superhero movie.
X-Men: First Class was the best of the year. The only real fault is that the action scenes felt obligatory and didn't amount to much. Also, if you've got so many X-Men to choose from, why pick Havok and Banshee? Nevertheless, First Class completely reinvigorates the series and creates a new star in Fassbender. The best in the series since X2.
Green Lantern was, of course, a huge letdown. Full of cliches, weak performances, lame action scenes...GL had so much cinematic potential. Martin Campbell is a master of gritty action movies. Wolverine or the Punisher, he could do. Why he was chosen for the space opera of GL is baffling.
Captain America has a solid set-up, but falls apart. Once Steve Rogers has become a hero, there is no further character development, just lame cliches. This movie is so bad at intergrating action scenes that they genuinely seem inserted at random. At the climax, supposedly the most exciting point of the movie, I was ready to go to sleep and waiting for the credits.