The extent of Geffen's accomplishments is astonishing. As a manager in the 1960s, he made the deal for Crosby, Stills, Nash & Young to appear at Woodstock. He discovered 1970s superstars Jackson Browne and the Eagles and masterminded Bob Dylan's famed 1974 tour; Joni Mitchell, Geffen's roommate for a time, memorialized him in her song "Free Man in Paris." He produced Risky Business, the movie that made Tom Cruise a star, and was the moneyman behind Cats, the longest-running musical in Broadway history. One of the most brilliant dealmakers ever to work in Hollywood, he became a billionaire shortly after selling Geffen Records in 1990, and he made movie history when he founded, with friends Steven Spielberg and Jeffrey Katzenberg, DreamWorks SKG, the first new Hollywood studio in fifty-five years. And Geffen's influence has extended far beyond show business, into the worlds of Wall Street, art, real estate, and politics.

Geffen's personal journey is as compelling as his business machinations. Although he knew from an early age that he was gay, he hid his true sexual urges and for years attempted to lead a heterosexual life. In the mid-1970s, he dated -- and almost married -- Cher...