Not long ago I went to a press screening of “A Serious Man,” a 2009 black comedy-drama by the Coen Brothers. When it ended I staggered out, overwhelmed by the religiosity and the physics and sheer Jewishness of it all. (Despite a deceptively Irish surname, I am a member of the tribe.) Lou, a colleague who is Italian-American, asked if I was okay. “Yes,” I replied, wondering aloud if the film’s yiddishkeit was understandable to a Gentile viewer.