Appropriately, many actors, writers, and directors popular in the 1970's make appearances, including Robert De Niro, John Milius, Margot Kidder, Ryan O'Neal, Ali MacGraw, Paul Schrader, Luciano Damiani, Brian De Palma, and the ghost of Montgomery Clift.
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With a tattoo of Montgomery Clift and Elizabeth Taylor as they appear in A Place in the Sun (a film that plays an important role in the plot) on his shaved head, he makes an impression on the people around him.