Saw this yesterday.
I have mixed opinions about it.
In general I really liked it. I loved how they designed Asgard and created the whole mythology of superior Aliens being worshipped as gods by humans. Though they failed to create a proper timeline.
Just how old is Thor? He is portrait as young hot blooded guy but if he was worshipped millenniums ago he must be pretty old.
Also the gods don't seem to be proper immortal given that Odin is old and on the verge of dying.
I thought that was weird, though fair enough that might be nit picking.
What I loved most about the film was Loki. I think he was the best character in it and outshines everyone else.
Chris was alright but the script doesn't give him much to do. First half he is this arrogant dick and then he instantly switched to mister sensitive cause nothing makes you a better person like being a human for 2 (!) days. Yeah right, cause we're such a sensitive and reasonable race.
Obviously in that short time you not only can undergo a complete personality make over but also find the love of your life along the way. Duh!
I think they did a terrible job of making that change happen, there is not the slightest development. Thor seem to have no problem at all being just human when he was an almighty god all his life. It's like someone just snapped his fingers.
Anyway as said I found Lokis storyline so much more interesting and to me he deserves sympathy cause he is just the nerd who was bullied by the cool gang (Thor and his friends) all his life and suffered under his father who did a piss poor job of showing his love to him.
And the film wants us to root for the bullies?

Loki was a great King, he almost managed to destroy the Ice Giants and restore eternal peace to the realm. Which for some reason was bad because...?

I also hated Thors friends they were so smug. "Oh no Loki is King lets overthrow him" Why what for? Loki never gave them reason to believe he'd be a bad king. Yeah he lies a lot, so what? Odin banished Thor and I think he wanted him gone for a bit longer than 2 days anyway. As far as the warriors three and their bitch know Thor is still a dickhead (not knowing he completely changed his ways) so he would probably oppose his brother bringing war to Asgard if he returns. Didn't think that one through did they?
I did like the movie and yes Chris awakened the urge in me to put my male genitalia into various body openings of his but apart from that Loki was the star of the film. His character was the best developed and evolves the most.
Looking very much forward to see him again in Avengers.

I was surprised they left it open with Thor being stuck in Asgard cause now they have to explain how he returns in the Avengers movie
Oh oh I completely forgot. The most annoying thing in the film was Shield. God I hate that organization. They are so annoying. Yeah we steal all your stuff and hold your friend captive but do not worry we're the good guys.
And then Thor goes: We follow the same goal I am your ally from now on.
WTF would you say that for? They only showed their bad side, he has no reason to believe they are remotely on the same side.
Hawk Eyes cameo was completely pointless, it was so short you have probably forgotten he was there by the end of the movie if you wouldn't know he'll become important later on.
Funny enough him being there made more sense than Black Widow in Iron Man 2 despite her having a lot more airtime. Still on a scale of pointlessness I'd put them on the same level and I have no doubt they continue to be pointless in the Avengers Assemble movie.