The good: This movie was visually very good. I thought all the effects looked really cool, and I liked the overall feel of the film. It was an adventure, but it could have been a LOT better.
The bad: I thought the characters were really weak. They could have shown a lot more character development for Thor. Not to give too much away, but it was like he just all of a sudden flipped a switch and did all his growing all at once and everyone could see he was different. I'd like to see that take more time, or see him go through something more emotionally challenging that takes more of the movie. I just didn't end up caring about him, or really any of the other main characters. To be honest, I thought the most interesting character was the gatekeeper. I would've liked to know more about him.
The good: Visually everything looked okay...but I can't really think of anything I liked.
The bad: To be honest, I was bored. Although I wasn't offended about anything, I actually considered leaving because I felt like I was wasting my time. As amazing as Captain Jack Sparrow was in the first Pirates movie, I'm done with him. I just don't think he's a deep enough character to carry more than one (let alone four!) movies. He doesn't (much) about people, and I don't see really any character development over the course of the films. If anything, I think the movie would have been better if they explored the relationship with his father as opposed to some woman he cares about that we've never seen before. And of course they left the door open for yet another sequel...