Guardians of the Galaxy Trailer

I really do not know what to think about this movie from the trailer, not having any fallback position from having read and of the comics I assume it's going to be a comedy but with dark overtones, I think.

Captain America The Winter Soldier Trailer

I really enjoyed the first movie as a total package, maybe not so spectacular as
the technology driven Iron Man series or fantastical Thor but more grounded
in humanity.

Iron Man 3 Trailer

This looks like it's going to be a dark movie although I doubt there will be a lack of humour.