Yeah, it's worth a few extraneous colons to talk about a few Marvel Comics connections in the new movie, Thor: The Dark World. (Very light spoilers for stuff that shows up early in the flick, but the end will feature spoilers for the film's stingers.)
This isn't a full "Secrets of SHIELD" post on the film - that would probably have to wait until long after the DVD has been out - but this can be a heads-up for film-goers, so you can know a few of the secret comic book references hidden in plain sight.
Things to keep an eye out for while watching the film:
Odin's father Bor (who may or may not have been worshiped during the time of Conan the Barbarian), son of Buri, is a very powerful god, as one would suspect. In the comics he was killed through the machinations of Loki. To be fair though, who hasn't Loki betrayed at some point?
In Thor's very first appearance he battled the Stone Men of Saturn, better known to modern fans as the Kronans. Although these Easter Island rejects have invaded Earth numerous times over the past 5,000 years - always to be defeated by one of Earth's superstrong heroes - they are generally agreed to be an honorable race that respect a warrior's vow enough to die defending a comrade-in-arms. Clearly from Midgard's realm, they have tangled with the Asgardians often enough to know hammer-bearers make formidable foes.
Thor may be the God of Thunder, but Tyr is the God of War. As significant as that sounds, the one-handed god has not appeared prominently in that many Thor stories, and is rarely considered a major player. The Asgardians do respect his might, however.
Sif, in mythology, is Thor's wife. In the comic books, she is generally considered to be his destined-wife. What that means for Jane Foster is anyone's guess. Jane did marry someone else in the comics, but it didn't work out and she keeps coming back to Thor. By the way, Sif originally a blonde, but in one of Loki's less threatening schemes, he cut off all Sif's hair and she had it replaced; she liked her new hair so much, she kept it.
Malekith the Accursed has been a major enemy of Thor for years. The comic book version of him is basically Loki, minus any redeeming qualities. He's black-and-blue in the comics, but I imagine they didn't want to confuse movie audiences who might expect blue Thor enemies to be Frost Giants. Interestingly, his most well-known plot involved the Casket of Ancient Winters, last seen in the first Thor movie.
Kurse of the comics is very different from to Kurse(s) of the movie, but either way, he's a major threat to Thor. This Dark Elf of Svartalfheim was betrayed by Malekith once, but he came out of the experience more powerful than ever.
Each of the Nine Worlds of Asgard is significant in its own way, and with the first movie focusing on Jotunheim, and the new film spotlighting on Svartalfheim, one can only hope more are seen in future films.
My money's on Musepelheim.
Now, spoiler warnings about the mid-credits stinger and end-credits stingers.
I mean it.
Abandon all hope of avoiding spoilers, ye who enter here.
So, in case you're wondering about who and what they were talking about at the end.
The Collector is one of the Elders of the Universe. The Elders are each the last member of their respective race allowed to live for the rest of eternity for some reason. Each of these Elders has chosen to spend eternity devoted to a single obsession. The Collector chose to become obsessed with being obsessed, so he just collects... everything.
The Infinity Gems are six (or seven) baubles of immense power. In the comics, they were once called the Soul Gems (after the first known member, the Soul Gem), but are now known to hold sway over vital forces of the universe. Respectively, each gem controls time, power, souls, minds, space and reality, but when brought together, the wielder becomes god. Not "a" god like Thor, but the actual supreme being of reality, omnipotent, omnipresent, and (nearly) omniscient. Interestingly, the Tesseract from the Captain America and Avengers films is referred to here as one of the gems (probably Space, given that it served primarily as a portal in both films), even though it looks like a Cosmic Cube, which is an entirely different all-powerful McGuffin.
There's also an end-credits stinger that is worth waiting through the credits for. Here's hoping they deal with the repercussions in the SHIELD TV show.