I need suggestions for some good zombie anime/manga.

Anime: High School of the Dead (Sorry but that is the only zombie Anime I know of)
Manga: High School of the Dead (People are saying the Manga is better but I haven't picked it up yet.) and Apocalypse no Toride (This Manga is a must read for all zombie fans, lots of gore and scary looking zombies. They have a zombie that looks like a dog/llama I was going to post a picture but it's kind of er.. disturbing for 'some' people).

Links:

Apocalypse no Toride manga;
link

High School of the Dead manga;
link

And Du can watch the High School of the Dead Anime subbed & dubbed on youtube.

Try Zombie Loan oder Kore wa Zombie Desu Ka!

Du can try Sankarea ?

I watched one called Ghost Hound. It's about this kid who was kidnapped with his older sister, but she dies. The Anime has a lot of ghosts and creepy scenes, I think Du should try it. ;)