There are plenty of great movies that play off the influence of zombie movies, Feast, 30 Days Of Night and a third one I'm sure I thought of a minute or so ago but that literally just slipped my mind (f
ucking alzheimers).
As far as bona fide zombie movies go, there's only one for me;
Night's great, Dawn (both the original and the remake) are fantastic, Land was ok, but this pips them all to the title of best of the lot, and is as such my favourite zombie flick ever.
The story has the right tone of hopelessness required to make dystopian cinema work, and it's the best illustration of something that the other films in the ...Of the Dead franchise all said about how all it takes to screw you over is your fellow man, no matter how well-poised you might be to, say, survive a zombie apocalypse. Back this up with one of cinema's best ever d
ickhead characters (Captain Rhodes), some great gore, a fabulous tone-setter of an opening sequence and, of course, the mighty Bub, and you've got one of my favourite films of all time.
Check out the 2008 remake if you want to see one of the most spectacularly awful horror remakes ever made as well.