The Scalzi and Bacigalupi books are so worth it.
Bacigalupi is a great author. I really liked the Wind Up Girl, and about 80% of the short stories in Pump 6 were good.
Old Man's War is a recent classic. I've read all the books in the series, and the first is the best.
I've read all the Neil Gaiman and Dave McKean collaborations, and honestly I don't care for McKean's artwork. It took me a while of looking at the preview to realize I'd already read Signal-to-Noise. Forgettable.
I haven't read:
Cory Doctorow: Pirate Cinema
Lauren Beukes: Zoo City
Mercedes Lackey: Invasion
Kelly Link: Stranger Things Happen
Kelly Link: Magic for Beginners