I'm always up for more talking about Tom Hiddleston/Loki. This is one Midgardian who would be happy to kneel, say his name, and submit to his benevolent rule, if you know what I mean.
Went to see Dark World on a whim, had seen Avengers and didn't think much of Loki at the time (how was that possible? No one knows). This movie turned me around in a major way. I've now gone back and watched the original, rewatched Avengers, and yes, saw The Dark World in the theater a SECOND time.
Without rehashing what everyone's already said - bottom line, I adore these movies (high art, no, but super fun and better than most in the genre). And I adore Tom. Loki is a gift of a character, and Tom was born to play him.
Definitely loved the Loki stuff in this movie the most. He got to be angry, sad, funny, clever, sweet, heroic, and of course devious and manipulative, all at once! Everything Loki should be. I LOVE that they gave him a chance to be with the "good guys" this time, and I love how they constantly walked that line of not making him totally trustworthy but at the same time allowing him to be noble. Kind of like pre-revelation Loki in the first movie, only so much more satisfying because of all he's been through.
Favorite part - the escape. The shapeshifting, the "hero shot" of Loki and Thor walking through the hall, all the Warriors threatening to kill him, his reaction when Jane smacked him, the banter in the ship, aaaahhhhh such cuteness! My affection for Thor is defined by Loki - I don't care about his growth or his relationship with Jane or his taking or not taking the throne, I only really care about his relationship with his brother. I feel like you can really see how much he just wants his brother back, through all the movies. It's very sweet. And inevitably sad.