Some favorites and a few of my own devising...
9. High Brains Drifter
8. Extremely Pale Rider
7. Butchered Cassidy and the Undead Kid
5. The Good, the Bad and the Undead.
4. The Man Who Ate Liberty Valence
3. The Ox-Bone Incident
2. The Quick and the Living Dead
1. True Gristle
Again, thanks to Keir Graff of Booklist Online for his creative jump-start.