But then, who’d be suicidal enough to want to get between Stewart and an audience? No one gets at the tragic dignity of a powerful man in irresistible decline quite like Stewart (and here I direct your attention, without shame, not only to his work in Macbeth and The Ride Down Mount Morgan, but to his towering, tumbling, still-unequaled performance in the series finale of Star Trek: The Next Generation). “Sound!” he declares, triumphantly and foolishly, “The crown prince of phenomena!” Embarking on a long and ultimately nonsensical digression about how sounds and smells emanate from the innermost self, Stewart’s Robert witlessly reveals himself a gaseous and empty person, vulnerable to the slightest pinprick. But Stewart himself is a creature of such remarkable vitality, it’s a little hard to buy him as a guy at the end of his powers.