The SF group doesn't currently have a good recommendation thread, so I thought I would start one.
What books would you recommend to a newcomer to SF? What do you consider must-reads? Any books that make a good cross-over from fantasy to sf?
Perhaps you would just like to list your favorites, or maybe break them down by genre or date of publication.
I know, we do have past threads that touched on this topic, but a new current thread, to gain the attention of our new members is, imho, in order.