I just got a call from Zogby: they're doing a poll on comedy. I had to laugh when the guy who probably earns most of his paycheck polling on presidential approval ratings and voting preferences had to ask me whether I found a "Yo Mama" joke funnier than "racist, homophobic, or anti-religious" jokes, knock-knock jokes, etc. It was somewhat difficult: I've never thought about which age group is most gifted at the comedic arts (how old is Jon Stewart?), whether large people are funnier than people with average body types, whether gays and lesbians are more hilarious that straight folks, blacks are funnier than whites, etc.
The easiest to answer (and please make note of it): No, I don't forward email humor.