Rosa Lyster at The Paris Review:
Here is Norman Mailer in his fine black boots, high-cut and shiny and very snug on the ankle, like something you might pick out if you were the prop master for an expensive production of Richard III. Sweating a bit under the TV lights, he seems to be doing an imitation of a scowl, as if to gesture toward his reputation as a guy who goes around scowling. He sits angled toward the host, Dick Cavett, who bends slightly away from him, as do the other two guests. One of them is Gore Vidal. Like Mailer, Vidal is doing an impersonation of himself. He strikes various languorous attitudes as the camera begins to roll, reclining deeper into his chair as Mailer leans forward, toying idly with his glasses and smiling as Mailer yaps and bares his teeth. A cat and a dog.
Compared to these two, both positively radiant with the excitement of showing off, the third guest seems to have been invited on by mistake. She is, basically, an old lady.
more here.