When I am preaching, the humor is meant to expose a truth. The Jews asked for rules and God them the ten commandments. They did not go into exile for having gays, they stoned them to death. They went into exile and lost everything because they violated the ten commandments. Jesus reinforced this thought in that when they asked him which was the most important commandment he told them it was to love God with all your heart and your neighbor as yourself. When I preach I have told gay people that they didn't even make the top ten of sins and Jesus never bothered mentioning them. That "top ten" reference is done in the form of a joke to highlight a point.
Our biggest problem is not that their are homosexuals in America or that if the government approves them being together they can get a tax break and inherit from one another. Our biggest problem is that we have ignored the top ten and the one that Jesus chose. What if we stopped killing one another or stealing from one another (that is aimed at JP Morgan, our financial system and a government that supports the financial system stealing from us) and cheating on one another, breaking our agreements which is lying. It was the institutional (society wide and accepting corruption) that destroyed Israel, not homosexuals.
The effective use of humor is to make a point that people will remember. Often comedy comes from pain. One of my best jokes was told during my colonoscopy with a camera 6 feet up my 5 foot, 8 inch frame. The best story teller with a point was probably George Carlin or for those of you in England, a Texan named Bill Hicks. They told stories and tried to help us see how silly this world is organized.
Robin Williams did improv and was great at it; but, he was even better when he was making a point in a movie, it gave him a point to steer towards. He got a number of awards for his acting and one of the films he made was called "The Best of Times". It is supposedly a comedy; but, is really a film about mistakes, regret and redemption. I am providing you a link to Hulu of the movie.
Hulu - The Best of Times
Now a couple of strange news items.