Thor: The Dark World is decent film. In this movie an ancient enemy called the Dark Elves is attempting to revert the universe back to a time when there was no light. Apparently the ideal time to do this is every 5000 years when the 9 realms are in alignment. The last time this happened, a great war was fought and the Dark Elves were annihilated. This makes me wonder if there was a war every 5000 years with the Dark Elves after light began or if the universe is less than 10,000 years old, making the first war the only war.
The subtitle the Dark World refers to the world of the Dark Elves, which has subsequently fallen into ruin. As an inhabitable planet it is pretty forgotten. Why haven’t the Asgardians (or other realms / races) moved to colonize the now abandoned Dark Planet? It should be noted that the Dark Planet is dark in name only. There appears to adequate light available.
The Dark Elves had a secret weapon (the Aether) they hoped to use during the convergence, but that weapon was captured by the Asgardians and locked away. As it happens, the convergence is happening again. This becomes the major plot point of the movie, as Jane Foster comes in contact with the weapon, which kind of/sort of possesses her. There are also dark forces trying to acquire the weapon in time to use it during the convergence.
Thus we see Jane Foster brought to Asgard in an effort to cure her of the Aether. There is the obvious question of the rational of Thor being in love with Jane Foster. She is from another world and will not live the standard 5,000 years of an Asgardian. There is also the obvious looks from Sif, who is probably the logical choice for Thor. But really, unless Jane were somehow given the same lifespan as Thor, Sif just has to bid her time before she can marry the heir apparent to Asgard. At most it is going to be 60-70 years. What is that amount of time considering the lifespan of Asgardians? Also Sif has been around for a long time, apparently not making her move, she can hardly blame Jane for that. The dark forces subsequently come to Asgard to acquire the Aether, and there is much conflict. Thor is eventually forced to seek the help of Loki, his imprisoned brother.
Before the movie came out I asked my wife if she was interested in seeing it. She said “I don’t know, from the trailer it isn’t clear to me that Thor will take off his shirt.” I said “is that all Thor is to you, just something to ogle?” she replied “that is all Thor is to anybody.” For the female audience that loves Thor for his muscles and not his origin story, I will say that what you seek is in the second movie, if only briefly.
I felt the movie was a worthy sequel to original movie. It was certainly better than Iron-Man 2. At least these characters get sequels, the same cannot be said for poor Hulk, who doesn’t even have his own movie yet (with the current actor).
For all the questions I raised in this review, there are only 7 tagged as thor-the-dark-world on the Scifi.SE site at the time of writing. Over half of them are related to the end credits scenes.