About the aliens were to organized to me thing, that is possible!!!! Aliens have some instinct that can make them not stepping on each other all the time. Tell me, when did you saw aliens stepping on each other in the movies. Look when they are coming upon our heroes in the lab, they are all one behind the other in a squeezee mather but no one is stepping on each other. As for the traila thing, that that we saw was only a exclusive preview but not the traila, it was too short to be. A traila usually stand 2-4 mins, sometimes more. 1 of the traila for the lord of the rings was 4.30 mins long! and what we saw yesterday was maybe around 1-1.30 min. And I dont think that there will be some metal or rock in the traila ya know. They will certainly use the orchestral thing to put us in the thone of the movie. But I dont expect to see much new things, that would be a mistake from PA to show too many of his film before time. But Only to see it on big screen will be something!!! everyone will get out of the movie saying Whoa have you saw that traila!!! and yes riddick was not so bad BUT have you saw that traila!!! Anyway, I`m sure that PA will release a last traila just before the D-Day. like 1-7 days befor it.