While looking for something else on the Web (of course) I found this list by author and critic David Pringle:
100 Best Fantasy Novels.
Some of the books I wouldn't exactly consider fantasy, like King or Shirley Jackson, but all in all a great list, with some old friends and forgotten treasures. He even has a fantasy book by Robert Graves, one of my favorite historical novelists.
Oh, and BTW: four of my suggestions listed above made Pringle's list! [img]smilies/biggrin.gif[/img]