The Happy Sceptic
One of the most entertaining sceptic sites on the web.
A tremendous source of information on junk science and the like
James Randhi Foundation
An excellent site, devoted to to James Randis search for good, honest, solid truth. His 1 million dollar challenge to those claiming paranormal powers is hilighted here...
Ever been in a circular argument with someone unconvinced about human evolution? Here's a brilliant website, with a good, strong summary of the topic. Has a special slant on how to argue with creationists...
One of the best sites de-bunking common myths to do with astronomy, astrology, etc.
The Skeptics Annotated Bible is a top source for inconsistencies in the bible.
Joseph Alwards site is a goog collection of articles written by a guy who has evidently spent a long time mulling over religious texts.
Skeptics Bible Here!
Joseph Francis Alward's Site
How To Spot a Physics Crackpot
As featured in 'Skeptic' magazine, John Baez's hilarious 'Crackpot Index' for physicists.