Some Resources on Fallacies

Fallacies in argument represent a host of unethical, sloppy, or inappropriate modes of persuasion or reasoning. But they also have legitimate uses at time. An ad hominem fallacy is usually described as an attack on a person’s character rather than that person’s reasoning. But sometimes a person's character is relevant to the argument being made. Most of these fallacious strategies are unacceptable all the time, but some are acceptable in some cases. This i spart of the reason it is easy to get sucked into using them inappropriately.

Standard List of Fallacies in Argument, categorized by ethics, emotion, and logic - http://projects.uwc.utexas.edu/handouts/?q=node/30

Expanded List of Fallacies, including some more specific instances - http://www.nizkor.org/features/fallacies/