The concept of ethnic, racial, and gender humor is as sensitive a subject today as it has ever been; yet at no time in the past have we had such a quantity of this humor circulating throughout society. We can see the power of such content manifested continually in our culture's films and stand-up comedy routines, as well as on popular TV sitcoms, where Jewish, black, Asian, Hispanic, and gay characters and topics have seemingly become essential to comic scenarios. Though such humor is often cruel, it can be a source of pride and play among minorities, women, and gays. Leon Rappoport's...