I'm going through World War Z right now...ehhhhh. I'm kinda bored of zombies, but I kept hearing great things about this book. I just don't find it very engaging, maybe because its so serious about a zombie apocalypse.
Speaking of Malazan, I got through book 4 and did not feel like continuing. Most of the characters seemed very thin to me, falling into 4 camps of: Badass Warrior, Badass Mage, Badass Rogue and Cynical world weary soldier. Great world building though.