Saw this again last week. Found it even better the second time around. Standouts to me are Jonathan the imperfect father (reminds me more of real fathers, including myself) and a Superman in the making rather than a fully-formed and veteran superhero.
Would have liked a bit more of Martha (both alone with Clark and with all three of them), but then I am a big fan of Diane Lane. Didn't find the action sequences as long the second time through. I think my minor objection to their length the first time around owed much to having read complaints about that before seeing the movie. Will definitely be added to my shelf along with all the other superhero films I've got. Looking forward to the next installment.