I'm really glad 'Archer's Goon' is on this list, it was my favourite book as a kid and I still re-read it now. I've been looking unsucessfully for the old BBC program based on it (on DVD)for a few years now...
I've read Viriconium, most of the New Sun books, and Jurgen. Viriconium's the only one that really made a significant impact on me. Jurgen was clever, and often imitated in Heinlein's later work, but it's just amusing, nothing more. Wolfe just seems dry, bloodless.
Lord of Light: It's fantasy, or it's science fiction, or it's a retelling of the tales of the Hindu gods, as they encounter Mahasamatman, who may be Buddha and may just be a guy called Sam. It's a book I reread every few decades, and love.
I read Lord of Light a few months ago, seemed fairly straightforward sf, they talk about old Earth, and when they first came to their new world. Maybe I missed some ambiguous stinger somewhere.