I think there should be more obscure ones tossed in. The most obscure one on the poll right now is the Pangborn book and even that one will show up on some enthusiast's radar.
If we want to go one step further, I'd suggest authors who aren't like, on the general list of Hugo/Nebula winners/runner-ups or "Grandmasters". How about some stuff by dudes who have a good reputation, but works that weren't part of what they're primarily known for.
A few more suggestions:
- Keith Laumer's Dinosaur Beach
- Fritz Leiber's "Gather, Darkness!"
- Mark Clifton/Frank Reily "They'd Rather be Right"
- A. Bertram Chandler's "Frontier of the Dark"
- Robert CHam Gilman's "The Rebel of Rhada"
- Saunders & Waldrop's "The Texas-Israeli War:1999"
- Ray Cummings' "The Girl in the Golden Atom"
- A. Merritt's "The Ship of Ishtar"
What other genre? Crime?