The one I really liked was the entry "Ross Macdonald and the Oil Spill". Author Jefferson Hunter talks about how Macdonald always used his California setting as part of his stories. Hunter is particularly fond of the moment in Sleeping Beauty (1973), when Archer sees an oil spill from an airplane and describes what he sees:
An offshore oil platform stood up out of its windward end like the metal handle of a dagger that had stabbed the world and made it spill black blood.
Damn. I love me some Ross Macdonald.
I also love the line StephenD quotes from The Ivory Grin:
I looked straight up into its dark blue well, moon-washed and dripping with stars, and wondered what the man at the window was seeing there, or looking for.