You never saw Catwoman, F4-2: Rise of the Silver Surfer, Spiderman 3, or X-Men Origins: Wolverine? Elektra was bad, but...ugh, there is much worse.
As you said, other than Thor being an angry, crabby man-baby in the first half, and then the sum of the story is that he decided to be a little bit of a team player...while still doing most of the work.
Honestly, what I enjoyed the most was Agent Coulson scenes and Hawkeye's nameless cameo. This was the movie where the Coulson role finally became less of a random guy being a little bit of a dick, and he became more of a real person, and an all around likeable guy imo. Also highly recommend the Captain America extra featurette.
What I can't understand was how this movie did better than Captain America, which was a more more cohesive film.
I'm still looking forward to the sequel though, strangely enough.