Julie Christie - films she is known to have turned down (there may be others)
"The Best Exotic Marigold Hotel" (2011)
"Town & Country" (2001)
"Camille" (2000)
"American Gigolo" (1980) 
"Cookie's Fortune" (1999)
"Marathon Man" (1976)
"Chinatown" (1974)
"The Godfather" (1972)
"Rosemary's Baby" (1968)
"Two for the Road" (1967)

She turned down the roles that went to Glenn Close in "Cookie's Fortune" (1999), Diane Keaton in "Town & Country" (2001) and Maggie Smith in "The Best Exotic Marigold Hotel" (2011).
Originally signed for the role of the Senator's wife in "American Gigolo" (1980) when Richard Gere was signed to the project, but quit when Gere was ditched in favor of John Travolta. Travolta later dropped out and Gere was hired for the film, but Christie was not offered the role that was eventually played by Lauren Hutton. Ironically, a rumor in the 1970s held that Christie and Hutton were lovers. Christie and Gere would eventually appear together in Sidney Lumet's "Power" (1986).
Her mentor, director John Schlesinger, envisioned a cast of Al Pacino, Julie Christie and Laurence Olivier for "Marathon Man" (1976). Pacino has said that the only actress he had ever wanted to work with was Christie, who he claimed was "the most poetic of actresses." Producer Robert Evans, who disparaged the vertically-challenged Pacino as "The Midget" when Francis Ford Coppola wanted him for "The Godfather" (1972) and had thought of firing him during the early shooting of the now-classic film, vetoed Pacino for the lead, insisted on the casting of the even-shorter Dustin Hoffman instead! On her part, Christie -- who was notoriously finicky about accepting parts, even in prestigious, sure-fire material -- turned down the female lead, which was then taken by Marthe Keller (who, ironically, became Pacino's lover after co-starring with him in "Bobby Deerfield" (1977). Of his dream cast, Schlesinger only got Olivier, who was nominated for a "Best Supporting Actor' Oscar. Pacino has yet to co-star with Christie.
Turned down roles in "Rosemary's Baby" (1968), "Two for the Road" (1967), "American Gigolo" (1980), "Chinatown" (1974), "The Godfather" (1972) and a re-make of the Greta Garbo classic "Camille" (1936).