This article is from the Recommended Fantasy Authors FAQ, by Amy Sheldon firstname.lastname@example.org with numerous contributions by others.
Jack Vance (b. 1916)
"Lyonesse trilogy" - Suldren's Garden; The Green Pearl;
"Best known for his SF, Vance is an interesting
writer in any genre.
"Dying Earth series" - The Dying Earth; The Eyes of the
Overworld; Cugel's Saga; Rhialto the Marvelous
"The first two are genuine fantasy classics, and
Cugel the Clever is a great character (hey, I like
rogues). These are all stand-alones.