For the last Classic Sci-Fi Meetup, we discussed I, Robot (1950) by Isaac Asimov.
One of the most classic works we've read in a while, I, Robot is a fix-up novel stitching together nine of Asimov's robot-focused short stories, with a fairly flimsy frame story of a journalist interviewing robopsychologist Susan Calvin about the development of robotic technology over the decades. It's most famous for introducing the 3 Laws of Robotics.
Easily the most well-attended Classic Sci-Fi meeting I've been to! Brief dsicussion notes below.