Best Zombie movies you have watched?

I really love Zombie Apoclaypse films,what are your best ones and what do you recommend me to watch?

There are a lot of good ones. Some of the ones I like include the following.

Resident Evil - 2002 - Most of them
Dawn of the Dead - 2004
28 Days Later - 2002
28 Weeks Later - 2007
I Am Legend - 2007
Zombieland - 2009
Shaun of the Dead - 2004