The Light Fantastic by Terry Pratchett

A full-planet reality reset on the Disc causes major chaos, as magic makes sure a failed magician with an important spell stays alive long enough to use it.

This one's an epic quest kind of novel: the guys have a mission (even if they don't know it), and they meet characters and fight battles on their way to the final goal. And Luggage shows what he's really made of!

I'm just sort of getting into the Discworld way of thinking - I've decided to read my way through them in the order they were written. They're funny and smart, with a deep philosophy that bears lingering analysis.

How To Tell Toledo From the Night Sky by Lydia Netzer

Once upon a time astronomy, astrology, and religion were all the same thing - and to the characters in this book, sometimes they still are the same.

Irene is an astrophysicist working with particles to create miniature black holes in her lab. George is a cosmologist trying to prove the philosophical concepts of the universe as explained to him by the gods and goddesses who visit during his headaches. They couldn't be more different - except that when they meet, it seems the stars collide and planets realign.

Lydia Netzer does a wonderful job with scientifically geeky characters (see also her book Shine, Shine, Shine). This couple banters about physics and the cosmos in a way that truly makes it almost sexy. They're a great match; which was expected, because their mothers planned it so.

I had three different theories on what I thought might happen at the end of this book, and I was wrong. Satisfyingly wrong, even. What an odd, wonderful book!