Mordant and drily ironic, he wrote with unique style. Here is an appreciation of his work. Here is another, with some helpful suggestions on where to start if you haven't read him yet. Here's another.
I can still remember my first exposure to Jack Vance: Mazirian the Magician, a story from The Dying Earth, which I first read in an anthology. I was very young, and reading voraciously, but that was a story that stood out.
Until today I had not known that one of his suspense novels was made into a TV Movie.