It is hard to overstate Justice Scalia's effect on the modern court. Upon his arrival, staid oral arguments before the justices became jousting matches, with Justice Scalia aggressively questioning counsel with whom he disagreed, challenging his colleagues and often dominating the sessions. He asked so many questions in his first sitting as a justice that Justice Lewis F. Powell Jr. whispered to Justice Thurgood Marshall: "Do you think he knows the rest of us are here?"There is no doubt something or perhaps a lot to this, but I gathered from perusing the oral arguments in Brown v. Bd. in the mid-50s (in preparation for writing this post) that Justice Frankfurter also asked a lot of questions, occasionally pointed ones (actually I don't know how typical that was, but it was certainly evident in the Brown arguments). Here's an exchange between Frankfurter and John W. Davis (sorry, it's out of context, but anyway):
Justice Frankfurter: Mr. Davis, do you think that "equal" [in the Fourteenth Amendment] is a less fluid term than "commerce between the states"?
Mr. Davis: Less fluid?
Justice Frankfurter: Yes.
Mr. Davis: I have not compared the two on the point of fluidity.
Justice Frankfurter: Suppose you do it now.