The Lensman wrote:
I have a signed copy of Foundation that is my proudest geek possession... saw him speak twice.
Two of my best "geek possessions" are the last couple of parts to both "Currents Of Space" and "Now You Don't" in their original magazine forms.
I have the Currents of Space
issues of Astounding
too, though they're very brittle. Somewhere I have Lord Valentine's Castle
and The Gunslinger
I think the simplicity of Asimov's writing is definitely part of the appeal, and I mean that in a good way.