#25: Ralph Nader '55 and Donald Rumsfeld '54 (tied)

Nader, the father of the consumer-protection movement, and Rumsfeld, the only two-time defense secretary and leading strategist of the Iraq war, share an odd and unlikely connection: Nader's third-party presidential candidacy in 2000, many believe, led to the election of George W. Bush, who brought Rumsfeld back to the Pentagon.