Saw it last night - I agree with many of the thoughts posted so far, so I'm not sure what else hasn't been covered.
- I thought this played out more like a sci-fi alien film than a comic book movie. It had elements of Independence Day, the Matrix, and Star Trek that made it feel much closer to those films than, say, Batman Begins or Spiderman.
- I personally didn't care for the casting of Adams. She's a fine actress, but she just didn't seem like Lois Lane to me. And I'm not talking about her hair color
- OTOH, I enjoyed most of the rest of the casting choices. Cavill was an excellent find, even though he didin't have much to work with. Crowe was great, as was his wife, while Lane and Costner did well with what they had (also, the makeup people did an excellent job of making Diane Lane look old). Shannon reminded me of Willem Dafoe in the first Spiderman - decent, but a little too much
- Lois being a dead shot with alien weapons and then riding around on the C-17 was laughable. Someone posted this earlier, but if she had some sort of military connection, it would've made those scenes at least somewhat plausible
- The score was incredible. Hans Zimmer is absolutely perfect for this kind of film, with his ability to toggle between subtle and over-the-top
- I felt Snyder did a fine job directing, although his "start with a wide shot and then use a lightning-quick zoom" habit started to get old, much in the vein of JJ Abrams' overuse of lens flare.
- The overall problem with these superhero movies is that they have to get bigger to outdo each other. The final battles in The Avengers, Iron Man 3, Man of Steel, etc, were all just too big in every sense of the word, even if they were all visually stunning
As far as origin films go, there's Batman Begins and then there's everything else. I would say this was no better or worse than the first Iron Man, X-Men, or Spiderman. Whether the second MOS makes the leap from good to great will be an interesting question. My fear is that they will rush everything just to cash in on a Justice League film.