Whether one is serious about rhetoric or not this is a most useful link. And it's hosted by Utah's own Brigham Young University. Thanks, cougars!
A few interesting lexemes to add to one's vocab:
A feigned refusal of that which is earnestly desired.
One asks and then immediately answers one's own questions (or raises and then settles imaginary objections)
A retort in which one turns the very accusation made by one's adversary back against him.
Rejecting an argument through ridiculous comparison.
A logical refutation.
pointer via MR