Hey Robert,
While right-wing comics might not get a lot of press, you might want to check out (or not) this interesting article about their growing popularity:
http://www.washingtontimes.com/culture/20031105-093420-8305r.htm
As for your comparison:
* Al Franken or Michael Moore: not really funny at all (I'm sure you'd figure as much).
* Coulter: don't really care for Coulter's "humor" either. She really just (at least on the TV panels/interviews I've seen with her) just substitutes deadpan sarcasm for argument.
* O'Reilly: don't really think he's pegged as a funnyman, at least I don't think he is. But, I also wouldn't label him a right-winger. I think he's much more of an elitist in populist clothing.
* Cho: I've heard she is amusing, but haven't heard her personally.
* Hannity: while he's "entertaining" sometimes, I really don't find him funny at all.
* Mad TV: never seen it.
* Crossfire: generally wouldn't call it funny (but have heard some pretty good one-liners on it from both the Left and Right fairly frequently). Also, I certainly wouldn't place this on the right-wing side.
Both Communist jokes are quite funny. I especially liked the one I hadn't heard about the neutron bomb. Now that's a classic!
Finally, while I often disagree with your political commentary, I find I agree quite a bit with your martial arts/Kenpo posts, and I frequently find your writing style and content humorous (in a good way).
Thanks, Howard