scepticism

Fashionable Nonsense: Postmodern Intellectuals' Abuse of Science - Alan Sokal, Jean Bricmont
The Science of Miracles: Investigating the Incredible - Joe Nickell
The Borderlands of Science: Where Sense Meets Nonsense - Michael Shermer
Abominable Science!: Origins of the Yeti, Nessie, and Other Famous Cryptids - Daniel Loxton, Donald R. Prothero
Do You Believe in Magic?: The Sense and Nonsense of Alternative Medicine - Paul A. Offit, M.D
 The Skeptic's Guide to the Paranormal - Lynne Kelly
Nonsense on Stilts: How to Tell Science from Bunk - Massimo Pigliucci
Pseudoscience and the Paranormal - Terence Hines
The Truth About Uri Geller - James Randi
The Demon-Haunted World: Science as a Candle in the Dark - Carl Sagan (Audiobook)
 50 Popular Beliefs That People Think Are True - Guy P. Harrison (Audiobook + E-book)
Flim-Flam!: Psychics, ESP, Unicorns, and Other Delusions - James Randi
Irrationality - Stuart Sutherland
Science Friction: Where the Known Meets the Unknown - Michael Shermer
Quantum Gods: Creation, Chaos, and the Search for Cosmic Consciousness - Victor J. Stenger
Intellectual Impostures - Alan Sokal & Jean Bricmont
For Good Reason (Audio Pack)
Top Secret: The Truth Behind Today's Pop Mysticisms - Robert M. Price