What is pseudoscience? How does it differ from science? This page is a good place to get oriented. It uses astronomy - astrology examples to contrast the differences along numerous dimensions, and discusses the special forms known as bad science, junk science, and pathological science. (S.K. Lower)
The Skeptic's Dictionary: A Critical Survey of Questionable Therapies, Eccentric Beliefs, Amusing Deceptions and Dangerous Delusions. This excellent site by a professor of philosophy at Sacramento City College contains hundreds of skeptical definitions and essays on occult, paranormal, supernatural and pseudoscientific ideas and practices with references to the best skeptical literature. Translations in several other languages are available.
Extraordinary Popular Delusions and the Madness of Crowds - this 1841 book by Charles MacKay is the grandaddy of all the flimflam debunkers. Free Download site.
Creation pseudoscience: Creation Science home page ; See also The Talk.Origins archive and its subpage > The Second Law of Thermodynamics, Evolution, and Probability . A Brief History of the Modern American Creationist Movement provides a good profile of this made-in-America nonsense.
Hot Air: home page of the Annals of Improbable research.
JunkScience.com: "All the junk that's fit to debunk" - and you will find it in abundance here, colored in some cases by the author's biases!
Bad-science examples in the various disciplines (Alistair Fraser)
This pseudoscience page by Edward Lipson offers a well-organized wealth of links on many areas of pseudoscience.
Weird Science - a collection of files and links dealing with unconventional physics including energy machines, gravity devices, Tesla, anomalies, etc.
Crackpot energy-conversion schemes - Learn how you, too, can violate the laws of thermodynamics! This large collection of annotated links makes fascinating reading.
Institute of Human Thermodynamics - stuff such as: "Human chemistry is the study of reactions between individuals who are viewed as chemical species and with the energy, entropy, and work that quantify these processes. In modern human chemistry, people are viewed as chemical species, or specifically “human molecules” (a term coined by Charles Galton Darwin), A or B, and processes such as marriage or divorce are viewed as chemical reactions between individuals..."
The "AquaScams" pages describe a number of schemes sofening or treating water by means of magnets, "precious metal" catalysts, electromagnetic induction and mysterious vortexes or vibrations. There is also an extensive AquaQuackery section describing oxygenated water, ficticious "ionized" waters and "clustered" or other structure-altered waters sold as dietary supplements. See how the hypemeisters use sloppy science to flog their dubious wares on a credulous public!
CSICOP home page The Committee for the Scientific Investigation of Claims of the Paranormal is the premier skeptics organization. Their bimonthly journal, The Skeptical Inquirer, is a "must-read" that should be in every school library; you can see many of the articles at this site.
Skeptics society - they also publish a magazine and have an informative Web site.