You suggested the Retief stories to me years ago, and they were awesome.
I saw "The Mists of Avalon" by Marion Zimmer Bradley at a book store, so I picked it up.
I have "The Machine Stops" of course.
I should check that I have all the Lovecraft stories mentioned, but if I don't I can have them in a jiffy if I don't.
I couldn't remember it was Fritz Leiber who wrote the Lankhmar book or I would have looked the last time I was at Barnes and Noble (didn't notice the title anyhow). I did pick up "The Knight and Knave of Swords" from the used book store. Not that it does us much good for this group.
I think I'll just order that one then I'll be all set.