America likes action, and so does the world. The superhero phenomenon is an interesting development that may coincide with rampant coach potato-ism and screen-orientation. Especially as the feats are pretty much all CGI.
I still trust Roger Ebert as a film critic. But sadly, I no longer trust him not to ruin the surprises on a whim. I will read Roger Ebert's reviews for as long as he writes them. But I no longer read them before I see a given film.
It wasn't the mutants. It was humans that caused the Cuban Missile Crisis. Only luck saved us from nuclear war. But other than that, the new film, X-Men: First Class, gets a lot right about the historic crisis that is central to its plot.