Treasured Out-of-Print SciFi/Fantasy

[CCamfield]

"The Tower of Fear" by Glen Cook, for one. (There are so many...)

Just as dark as the Black Company books with a great setup - occupied city that used to be ruled by an evil wizard, with
- underground resistance against the occupiers
- the occupiers
- plus their nomad mercenaries
- innocent civilians caught up in the situation

Spoiler

- plus the few servants of the evil wizard trying to kidnap people and conduct (IIRC) human sacrifices to free their master from a freeze-time spell

 

[TheAuldGrump]

Wizard of the Pidgeons, by Megan Lindholm
Story of the Stone and Eight Skilled Gentlemen by Barry Hughart
Riverwall, by the late Randall Garret and his wife.
Ghosts, Ghosts, Ghosts - a children's collection of ghost stories
A Red Skelton in Your Closet (Favorite ghost stories of Red Skelton.)

Though a lot of old favorites have or are coming back into print.

The Auld Grump, saddest lost book - Paulus and the Acorn Men, went looking for a copy online and found it selling for $1800....

 

[Thotas]

"The Green Rain" by Paul Tabori. A strange rainfall causes a portion (a quarter, I think) of the Earth's population to turn bright green. The new minority allows Tabori to comment on racial issues in a way that is intelligent, insightful, sensitive and humorous.

"The High Crusade" by Poul Anderson. Someone once commented that "if it isn't true, it ought to be." An empire that has conquered half the galaxy takes on a small village in the English countryside in the year 1345 A.D.. Silly aliens, you don't stand a chance.

"The Circus of Dr. Lao" by Jack Finney. Completely different than the movie it inspired ("The Seven Faces of Dr. Lao", starring Tony Randall and Barbara Eden). I've read the conversation between Mr. Etaoin and the serpent so many times, and it never gets old.

"Metropolis" by Thea von Harbou. Translated from the German original, also translated into a classic silent film by the author and her husband, Fritz Lang. Read it in junior high because it was a science fiction classic, read it in high school because I realized I hadn't been ready for German Expressionism the first time out, and every time since (how many? I don't know) for pure love of my favorite book.