The river walking zombies is Land of the Dead with Dennis Hopper and John Leguizamo (sp?). It's ok, but only if you like most any zombie movie.
The one with Ving Rhames where they dock on an island at the end is the 2004 Dawn of the Dead. That one is ok.
The one where people are on the island with a "controlled" zombie population is, Survival of the Dead. I think someone mentioned that already. It's terrible. I do not recommend. That's sort of a follow up to Diary of the Dead, which uses the first-person thing where they hold a camcorder. I thought it was lame.

28 Days Later is an amazing zombie flick. That would be my #1 recommendation.

yeah off the top of my head I honestly can't think of a better one. absolutely amazing. just grabs you from beginning to end.

28 Weeks later is another good one.

Yeah, but not nearly as good, IMO.

Well not complete, hollowed-out skeletons. Just basically eaten to shit. Either way though. LMAO

My favorite zombie movie of all time is the original Dawn of the Dead. However the remake of it is actually quite good. Here's a rundown of some good zombie flicks.

Dawn of the Dead 1978
Dawn of the Dead 2004
Day of the Dead (original only)
Shaun of the Dead
Return of the Living Dead 1&2
Night of the Living Dead
Night of the Living Dead remake is decent
Zombi 2 (or is it just Zombie? Eh...the one where the zombie fights the shark)
City of the Living Dead
Land of the Dead
Diary of the Dead
Evil Dead 1 & 2, Army of Darkness
Dead Alive
28 Days Later
Zombieland
Planet Terror

You left out Fido.

Still haven't seen it. Need to

Unfortunately, zombie movies are not like sex. When they're bad, they're really bad.

It is. Most intense first 15 minutes I can remember..

And the Dawn of the Dead remake is the best zombie flick EVAR!!!!11!!

They're just after our ice cream...

http://i.imgur.com/iGDHF.gif

http://i.imgur.com/w7erb.gif

LMAO

That remake is quite good. I still like the original as my favorite zombie movie because of the awesome music by Goblin lol. It just has a certain cheesiness quality that I love. But yeah, that remake is really awesome. I love them both. Shame the Day of the Dead remake sucked.

Also...is Fido good or bad? I've heard it was good from people.

Fido is good as long as you don't go in expecting to see a bunch of zombies eating people.