It would hafta be the cult classic, "Return of the Living Dead". It's just too frickin awesome! I like the remake of it, too! You can't beat the original, but they really got close! The first "Dawn of the Dead" is beyond awesome. Plus, "The Walking Dead" can be put into this category, as well! Oh, and "Zombieland", too. I just love that frickin movie! If I'm gonna consider "Zombieland", then I MUST add "Shaun of the Dead", too! Those are my all-time favs!
"Resident Evil" is good for entertainment value, only. It seems too much like a "cookie cutter" zombie flick, to me. I consider it more mutant than zombies. Oh, and that "28 Days Later" IS NOT a "zombie" movie!!!!!!! It's an INFECTION movie which makes people rabid! In order to even become a zombie, one must die, FIRST! The infected in "28 Days Later" do not apply! They are infected. They don't hafta die to become infected, either! Let's not forget what constitutes a zombie!
s**t! I just LOVE zombies, period!