My college age children have introduced me to the comedy of Jim Gaffigan, who is the subject of this nice NY Times profile. In addition to being a very funny fellow who remains quite appreciative for his good fortune, Gaffigan is one of the most prominent of a refreshing new breed of comedians (Frank Caliendo is another) who eschew profanity in their routines:

[Gaffigan] also said he was gratified by his fansí repeated support for the decision he made about five years ago to quite literally clean up his act and purge it of the ìcussing,î as he calls it, that he found he was using as a crutch. (On the meet-and-greet-line in Charlotte, he tried to warn some unsuspecting audience members about to buy one of his older CDs that his language was coarser.)
ìThe topics Iím discussing ó thereís no reason to curse when youíre talking about escalators,î he said. ìAmong comedians, George Carlin, Richard Pryor and Lenny Bruce are, in a way, the martyrs who fought for us to have the right to curse. I feel like they also made it possible for us not to.î