Life, the Universe and Everything
Douglas Adams
The Hitchhiker's Guide to the Galaxy (3)
The Son of Neptune
Rick Riordan
Heroes of Olympus (2)
The Chalice of the Gods
Percy Jackson and the Olympians (6)
Inheritance
Christopher Paolini
Inheritance Cycle (4)
So Long, and Thanks for All the Fish
The Hitchhiker's Guide to the Galaxy (4)