I haven't gotten through all of it, but I really like the New Turing Omnibus, by A.K. Dewdney. It's about computer science, not how to program, so it would be i

I haven't gotten through all of it, but I really like the New Turing Omnibus, by A.K. Dewdney. It's about computer science, not how to program, so it would be interesting to non-hackers, too. Even if you are familiar with all of its topics, it can serve as a reference and clarifying tool for CS concepts.