I know several of you have seen
this article in the Jewish Journal but in case you haven't...
Most interesting point for me: the person most keen on making the Eppes family explicitly Jewish is Rob Morrow, who is the least ethnically marked of the actors in appearance (least being relative, of course). And his reaching for "working class cred" out of Westchester County economically, while Judd Hirsch and David Krumholtz implicitly make the distinction by cultural geography (Manhattan, Queens).
Identity issues all around!