In good (or at least bountious) company

Can you guess what all these people have in common?

David Bowie, English musician
Laura Schlessinger, American psychologist and radio talk show host
Nolan Ryan, baseball player
Farrah Fawcett, American actress
Dan Quayle
Princess Christina of the Netherlands
Mitt Romney, Governor of Massachusetts
Ry Cooder, American guitarist
Glenn Close, American actress
Elton John, English singer, pianist, and songwriter
Emmylou Harris, American singer
Tom DeLay, American politician
Tom Clancy, American author
David Letterman, American entertainer
Kareem Abdul-Jabbar, American basketball player
Salman Rushdie, Indian-born author
Dave Barry, American writer
O.J. Simpson,
Arlo Guthrie, American singer
Camilla, Duchess of Cornwall
Carlos Santana, Mexican-born guitarist
Arnold Schwarzenegger,
Kjell Magne Bondevik, Prime Minister of Norway
Stephen King, American author
Meat Loaf (born Marvin Lee Aday), singer and actor
Michael McKean, American actor and comedian (AKA Lenny (aka not Squiggy)
Kevin Kline, American actor
Hillary Rodham Clinton
Richard Dreyfuss, American actor
P. J. O'Rourke, American journalist and satirist
K Wood Carlson
David Mamet, American playwright
Tom Daschle, U.S. Senator
Christopher Parkening, American guitarist
Ted Danson, American actor