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Al Gore

Claim to Fame: Vice-President, 1993-2001; former U.S. Senator
Fee: $100,000

With an Academy Award and a Nobel Prize under his belt, Al Gore has become a kind of Renaissance celebrity. Not surprisingly, Gore's global warming lecture is a big seller. The Smoking Gun, a Web site, nabbed a copy of the speaker's contract for a 2007 "Environmental Media Lecture," which revealed some interesting tidbits. Any vehicle used to drive Gore, for instance, "will be a sedan, NOT an SUV" and, if possible, should be a hybrid. The sponsor needs written permission from Gore to distribute photos from the event—and no media are allowed without his permission.