Hard boiled wonderland and the end of the world - Murakami Haruki

Murakami, buy-one-get-one-free option. Two stories told through alternating chapters.
The first one is based, as usual in Murakami's novels, in a slightly dystopian version of modern day Japan, where two powerful organizations are fighting an all-out cyber-war, and a band of invisible mutants roam around a web of tunnels connected to Tokyo's subway system.

A history of Western philosophy - Bertrand Russel, Sophie's world - Jostein Gaarder

These books offer two different approaches to anyone who wants to be introduced to western philosophy. They both range from the Greek Pre-Socratics to contemporary German, French and English speaking thinkers. One of them even gets to talk about the Big Bang Theory.