A-
Just got back from it and I have to say I really enjoyed it. It was a fun movie with a lot of action and Asgard provides a large canvas. Definitely wipes the bad taste of Iron Man 2 out of my mouth.
I thought the acting of the main four was excellent. Even though it was just an act, I thought the Hiddleston managed to make Loki a sympathetic character. The Loki/Thor/Odin interaction is strong and convincingly emotional. Hemsworth has an impressive physical presence for Thor and was funny without being stupid. Although his banishment doesn't last long, I bought Thor's change. Anthony Hopkins was excellent and managed to not chew too much scenary. Did not know that was Rene Russo as Thor's mom until I read the credits. I liked the Warriors Three although I agree they could have given Ray Stevenson a much bigger fatsuit. That character is supposed to be REALLY fat.
Although I liked the Marvel Universe references in Iron Man 2, I think Thor did a better job of working them in here. Although it didn't have to be in there, I liked Hawkeye's cameo. Nice inside jokes with Donald Blake and Stan Lee's cameo. I found the idea of guys getting drunk and having barbacues while trying to lift Thor's hammer to be hysterical because I imagine that's just what guys would be trying to do.
All and all, a very good start to the summer movie season.
Issues...I thought the final battle scene was a little underwhelming. I thought that it needed something a little more epic I guess. Thor quickly wins his fight on Earth and then it's the fight against Loki. Just thought it needed to be more grand to fit the story and setting. I also agree with an earlier poster who said that a lot of story elements here are resolved too easily.
EDIT: Ah, I forgot to talk about the 3D. If I had a choice, I wouldn't have seen it in 3D. Not only is it expensive but the studios desire to cash in on the "craze" has caused some lousy conversions from 2D to 3D. The 3D in Thor had its moments and was a lot better 3D than it was in Tron Legacy and The Green Hornet. But if you're going to do a 3D movie, then SHOOT THE DAMN MOVIE IN 3D!!! I'm very worried about having to get stuck watching the last Harry Potter in 3D.