Who's 'So Vain'?

Carly Simon is about to divulge the subject of her 1972 song, "You're So Vain." Unfortunately, only one man will know, and he doesn't appear willing to share the secret. Dick Ebersol, chairman of NBC sports and NBC Olympics, won the information in a recent charity auction to benefit Martha's Vineyard Community Services, which provides child care, counseling, substance abuse treatment services and visiting nurses to the community.

Ebersol said Simon gave him one clue about the man's identity that she said he could reveal: He has the letter "e" in his name.

That could be any of the chief suspects: actor Warren Beatty, whom Simon dated; Mick Jagger, who sang backup on the song; and her ex-husband, James Taylor.

Ebersol said he was happy to put up the cash for a secret he can't tell.

"It's a great cause and I wanted to make sure Carly didn't have to tell a total stranger," Ebersol said.