Watched the Sarah Silverman, "Jesus is Magic" DVD. If you like edgy humor, check it out. If you are easily offended, stay far far away!!

Silverman has created a unique act for herself where she portrays a persona that is totally inappropriate and about as un-PC as you get. She doesn't actually believe any of the stuff she says on stage. She just says one offensive thing after the other.
In this special alone she skewers Martin Luther King, the Holocaust, AIDS, 9/11, the "n" word, Mexicans, midgets, Puerto Ricans, Jews and a certain word used to describe people from China in a derogatory fashion.
She has this sweet look to her and acts as if she's unaware of how inappropriate and offensive what she is saying is.
Her act is really a performance. It's the deadpan delivery...she's really like an actor on stage. The only time you see the "real" Sarah Silverman is the last 2 seconds of the movie before the credits hit.

Here is an actual quote from the film:

"Oh please lord, please let there be semen in my dead grandmother's vagina.."

While all of it is funny and outrageous, I have to say I enjoyed the Martin Luther King bit the most. She's got balls to mess with ANYBODY, no matter how revered they are. And yet it's all a joke, if anyone actually thought this stuff it would be absurd.

Silverman is up there with Lenny Bruce, Sam Kinison and David Cross as one of the most subversive comedians of all time.

But I have no idea why she is dating Jimmy Kimmel. (whom you see in the making of featurette)