<P> In 1954, the actress co-starred with Joan Crawford and Sterling Hayden in the offbeat western drama, Johnny Guitar, now regarded as a cult classic . McCambridge and Hayden publicly declared their dislike of Crawford, with McCambridge labeling the film's star "a mean, tipsy, powerful, rotten - egg lady ." </P> <P> McCambridge played the supporting role of' Luz' in the George Stevens classic Giant (1956), which starred Elizabeth Taylor, Rock Hudson, and James Dean . She was nominated for another Academy Award as Best Supporting Actress but lost to Dorothy Malone in Written on the Wind . In 1959, McCambridge appeared opposite Katharine Hepburn, Montgomery Clift and Elizabeth Taylor in Joseph L. Mankiewicz' film adaptation of Tennessee Williams' Suddenly, Last Summer . </P> <P> McCambridge provided the dubbed voice of Pazuzu, the demon possessing the young girl Regan (acted by Linda Blair) in The Exorcist . To sound as disturbing as possible, McCambridge insisted on swallowing raw eggs, chain smoking and drinking whiskey to make her voice harsh and her performance aggressive . Director William Friedkin also arranged for her to be bound to a chair during recordings, so that the demon seemed to be struggling against its restraints . According to Friedkin, she initially requested no credit for the film--fearing it would take away from the attention of Blair's performance - but later complained about her absence of credit during the film's premiere . Her dispute with Friedkin and the Warner Bros. brass over her exclusion ended when, with the help of the Screen Actors Guild, she was properly credited for her vocal work in the film . </P> <P> In the 1970s, she toured in a road company production of Cat on a Hot Tin Roof as Big Mama, opposite John Carradine as Big Daddy . She appeared as a guest artist in college productions, such as El Centro College's 1979 The Mousetrap, in which she received top billing despite her character being murdered (by actor Jim Beaver) less than 15 minutes into the play . </P>

Who did the voice of regan in the exorcist
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