And cliché though it may be, I grinned whenever Charles was protective about his hair - and seeing him trying to pick up chicks with the mutation spiel was chuckle-worthy, too. I also noticed about how their suits were basically the original suits, and I liked the X-Men mutants having an SR-71, like in the ...70s? Although, it strikes me that a VTOL, bomb-carrying version of the SR-71 might be a sign that the Cold War in that universe was even more tense than in ours. What do you think our USSR would have done if the US had've come out with that? It can fly faster than your missiles, take off damn near anywhere, and carry a half-decent payload, if the size of the bay is any indication.
I think it was telling, also, that Charles was perhaps a wee bit overconfident in being able to read someone's minds meaning that he knew all there was to know about them. He screwed up with Raven, at least a bit, and as someone in the thread about the trailers said, his words when Erik was holding the missiles couldn't have been chosen worse. It was a nice touch, I thought. And like has been said here, Erik and Charles, both as individuals and compared to each other, were handled brilliantly. They bonded fairly quickly, but considering Spoiler
Although there were a few wallbangers - 'the sound waves have to be supersonic', indeed - and how is Alex the younger brother of Scott Summers, assuming that relationship is unchanged? it was, on the whole, quite good. Better than X3 or Wolverine Origins, that's for damn sure!