I knew about this movie for a long time. I had heard positive reviews from friends, and finally I downloaded and saw something. What I saw was beyond imagination. Zombie horror is not the most lucrative and critically loved genre, but 'Dawn of the Dead' was warmly received by audiences and critics.
I think this movie is the best zombie movie ever made. Yes, the best. No, you say, '28 Days Later' is the best film, but I'll clarify: there are no zombies in '28 Days...'. People there are infected with a kind of rabies, there are no living dead. If you compare it to other movies, it's not even close to 'Dawn...'.
It's nice that Zack Snyder made the zombies running around - it makes the movie that much more interesting to watch. There is a lot of blood, action, and witty moments. Particularly enjoyed the opening credits.
I highly recommend that you watch it.