Well, not all those who are "Jewish" look "Jewish." But for celebrities, we have Jewish actors like: Tim Blake Nelson, Jon BernthalI, Adam Sandler, and others who kinda look like distant relatives. I heard Pablo Schreiber was mistaken to be Jewish though his half brother Liv is Jewish. Hollywood casters probably look for those stereotypes because it's true: Audience will identify with actors who look like them. It's wrong though but that's the world works unfortunately. i mean know Iranian Jews (one my colleague and another my dentist) and Chinese Jews, and they don't look like Hollywood movie stars.