Attacking the speaker instead of the argument.
Attacking the speaker's affiliation instead of the argument
Accusing speaker of "pot calling kettle black"
Saying "everyone does it" or "many do it"
Quoting the opinion of someone not qualfied to have an opinion in the matter under debate.
Using threats (implied or direct) to support a given point of view.
Using someone's unfortunate circumstances to support an unrelated issue.
"If you can't prove me wrong, I must be right!"
General rule incorrectly applied to special case
Special case incorrectly adopted as general rule
Statistics for a sub-population applied to the entire population
An either/or where other options are available
A question that assumes something that is not true.
Trying to change the subject
If we let X happen, it will just get more and more extreme.
Putting words in our opponent's mouth.
Circular reasoning If A then B, if B then A, hence A (or B or both).