I think that in these days, with 24/7 news, and the Supreme Court so politicized, you wouldn't have been able to get away with this -- assuming you'd even have a justice on a TV game show. But once upon a time, Supreme Court Justices were really that unknown.
Clearly, this is Supreme Court Justice on Quiz Show Day. As I posted earlier, Stephen Breyer appeared on the wonderful and witty news-based NPR quiz program, Wait Wait...Don't Tell Me! Unlike Justice Douglas, he was also quite well-known by the panel. You can hear it on the previo)