I read one, I think they are called "Blood Enriched Classics". One I read is called The Adventures of Huckleberry Finn & Zombie Jim...wasn't blown away but I enjoyed the telling.
There's others: I am Scrooge: A Zombie Story for Christmas, The Adventures of Tom Sawyer and the Undead, The Undead World of Oz...and others.
Yup, The Rising, City of the Dead, Dead Sea, and Entombed by Mr. Brian Keene are worth reading. Keene also has a comic titled The Last Zombie. Haven't read it because comics aren't really my thing, but I'm kind of a completist so I'll get to it eventually.
I love zombies, but ironically I haven't read a ton of zombie lit. Seen a lot of movies, though. Seems like I've read more of the redneck cannibal genre than anything. If you wanted to know about that genre than I could certainly tell you.