It's really hard to overstate the impact of PKD's later works and JG Ballard. Having read about 50% of this list, I think all of our modern dystopia, paranoia, and existential SciFi sprouted from their insane seeds. And the depth of LeGuin's exploration of social, sexual, and economic identity in alien worlds sticks out like a sore thumb compared to her peers.
Damn, tho, the book cover for The Three Stigmata... is fascinating. I always pictured him as just a cyborg octogenarian but now I can't unsee this. I miss that artwork.
Aaaaand, it would be nice of the page author would put these in a CSV at the bottom so that I can make a checklist!