-Donaldson
-Lloyd Alexander
-R Scott Bakker
-Robert Anton Wilson
-TH White (who says they can't be dead

This is fantasy! If The Once and Future King will again awaken, why not the author of The Once and Future King?)
-Luo Guanzhong (ok, not really fantasy, but as close as I can get from China), and an interpreter.
Donaldson's something like our patron author at this site! How could any of you refuse him a meal!? Alexander's one of my favorites from childhood, so I'd be happy to reciprocate his kindness and chat with him. After them I was pretty much going for creativity. I'll probably want to add some fine ladies into the discussion, but I'll leave it at this for now.
The real question is what sorta stuff I'd be expected to serve as the presumed host. I suppose mead would be the beverage of choice for fantasy authors, and the sci-fi people would get...crappy tasting nutrient-rich astronaut meals!
EDIT-Heyo Alselm, can't help but notice you have a berserk avatar! I used to have a pic of guts in my sig, but I got rid of it because it took up too much space. Anyway, good to see a fellow fan!