In a review of Underworld at AICN one of the three reviewers hit on an important point about movies today

…it saddens me as I slowly realize that it is not the writers, directors, actors, producers or even the studio heads that keep Hollywood afloat these days. It is the brilliant trailer editors that can make any festering pile of monkey doo look like a steak sandwich slathered in Bleu Cheese for 2 minutes and 31 seconds. “Damn, that looks tasty,” you think to yourself. And no matter how many people you meet who have tasted it that decry “BUT IT’S A FESTERING PILE OF MONKEY DOO UNDER CLEVER LIGHTING!” you still think “Yeah, whatever. Maybe I’ll like monkey doo.”