For a definition, see WikiPedia:Logical_fallacy.

For an excellent list of logical fallacies, see

• [Don Lindsay's List Of Fallacious Arguments]
• http://www.intrepidsoftware.com/fallacy/toc.htm [BrokenLink 17 Jan 2006]

Focused on creationism:

• [Damien Sorresso's Logical Fallacies and How to Spot Them] - note this is rather childishly written.