I'm still new to this genre, but I bet if you head over to The Aussie Zombie, I bet that she has a fairly extensive post on the subject. (She's also a participant in the Blogging A to Z Challenge.)
There are only two books that came to mind when I tried to recall anything in the genre.
Alright, alright, I know A Touch Mortal isn't really a zombie novel. You guys should know by now that I'm just a Leah Clifford fan-girl, and I can't resist the urge to talk about her books. Anyways, it's more fun to say the main characters are zombies and angels, versus them being Siders and angels. Don't you agree?
You shouldn't disagree with me - I can haz zombie kittehs on you!