Could have an interesting chin-wag regarding whales and spirituality stuff with Herman Melville, of course.
Personally, this is my list. I'm not including Kristopher Young, though, since he's a mate of mine:
James M. Cain
Philip K. Dick
Charles Lutwidge Dodgson
Theodor Seuss Geisel
Robert E. Howard
I think we'd have to have a party and invite all of them along, then throw 'em into the mix. Wunderbar!