I love horror & zombies!
1. I have a hard time picking my favorite, but I‘ll go with The Reapers are the Angels by Alden Bell. Very existentialist!
2. Just one? 28 Days Later, Shaun of the Dead, The Dead Don‘t Die, Train to Busan, Warm Bodies, Juan of the Dead, Zombieland, Little Monsters, Reanimator (hon. mention to Girl with All the Gifts and WWZ-but the books were better!)
3. Raising Stony Mayhall and eager to try Zone One by Colson Whitehead!