The Kaiju Preservation Society

Just plain fun. The whole concept of going through a portal to another earth reminded me vaguely of The Long Earth, a great series by Terry Pratchett and Stephen Baxter. But the kaiju were entirely original to Scalzi's work. This was light-hearted and fun, and like the author describes it at the end, a pop song. Highly recommended, especially if you need a break from anything dark and too depressing.