When director Zack Synder's reimagining of George Romero's watershed zombie epic Dawn of the Dead (1978) was announced, no amount of outrage in the horror community was spared. How could Romero's independent, unrated splatter classic (this was the very film, in fact, that Romero coined the term 'splatter movie' for) possibly be translated into an R-rated studio film? Even worse, this atrocity was going to be helmed by a music video director who had never directed a feature film - and it was scripted by James Gunn, who at the time was known mostly as the writer from the godawful live-action Scooby-Doo. If there was ever a film that had fandom united in anticipation of impending suckitude, the Dawn of the Dead remake was it. To call it a hard sell to the horror crowd doesn't even cover the amount of animosity that Dawn of the Dead '04 had to overcome.
And that's why this trailer is one of the all-time greats - because it immediately turned the tide of opinion on this movie. What had been the target of nothing but 'fuck this movie' diatribes suddenly was looking pretty sweet. Whether Dawn of the Dead '04 is the greatest zombie movie ever is debatable (it's not, but feel free to debate it) but no zombie movie has ever had a more bad-ass trailer.