A wonderful, playful look at more than a century of Jewish ethnic humor in Hollywood, triggered by the minor (and silly) controversy over Bradley Cooper, who is not Jewish, portraying Leonard Bernstein while wearing a prosthetic nose.
Author Jody Rosen, writing in The New Yorker notes that much Jewish ethnic humor, particularly at the turn of the 20th Century, gave gentiles an opportunity to ridicule Jewish immigrants, often cruelly. But this form of humor was different from other minstrelsy in that it was often performed by Jews, and Jews themselves loved it.