Earlier in the evening, before playing a medley of rap tunes and a few recent compositions from the film Boogie Nights, he dedicated his efforts to Frank Zappa, who died of prostate cancer several years ago.
"Frank Zappa?" said Gen. Norman Schwartzkopf, a prostate cancer survivor, incredulously. "Wasn't he married to Jane Fonda?"
The party came in three parts. A wine session with Barbra and Deepak and Bruce and Demi, for which the invited rich people each paid $5,000. Dinner was cheaper: $1,000 a head, and it was served in Mr. Zuckerman's converted barn, which in keeping with the designer's exotic religious beliefs was decorated as a mediation garden, complete with power crystal displays. Just outside, Tibetan prayer wheels spun slowly in the wind.
Even Mr. Chopra, who preaches that being rich is politically correct, stayed for hours. Besides teaching Ms. Karan how to cleanse herself daily with fruit juice and colonic irrigation, Mr. Chopra now spends most of his time managing the stress of the world's richest and most successful people.
"I don't know," said Ruth Messinger, looking just a tad out of place standing next to Barry Diller. "If he can help Donna maybe he could have helped me too."
Michael Specter is a Moscow correspondent for the New York Times.