Gregory: The degree to which well-dressed, seemingly sensible human beings carry on about 24 continues to astonish me. [The cast] had an after-hours tour of the Supreme Court. It turns out Clarence Thomas is a huge fan. Then, at the White House, Karl Rove showed us aroung the Oval Office and called me Mr. President. That was quite a moment for a dyed-in-the-wool liberal like myself.