Suggestions by @kylewhite

Alan Parker

as Director in The Exorcist (1983)

Score: 0

Wes Craven

as Director in The Exorcist (1983)

Score: +3

William Peter Blatty

as Producer in The Exorcist (1983)

Score: +1

Lauren Bacall

as Pazuzu in The Exorcist (1983)

Score: +2

John Carpenter

as Director in The Exorcist (1983)

Score: 0

Gene Wilder

as Father Joseph Dyer in The Exorcist (1983)

Score: +1

Ed Flanders

as Father Joseph Dyer in The Exorcist (1983)

Score: +2

Dudley Moore

as Burke Dennings in The Exorcist (1983)

Score: +3

Lee Marvin

as Lt. William Kinderman in The Exorcist (1983)

Score: +1

William Hurt

as Father Damien Karras in The Exorcist (1983)

Score: +4

Laurence Olivier

as Father Lankester Merrin in The Exorcist (1983)

Score: +2

Jennifer Connelly

as Regan MacNeil in The Exorcist (1983)

Score: +7

Jane Fonda

as Chris MacNeil in The Exorcist (1983)

Score: +4

Maura Tierney

as Susan Page in Planes, Trains, and Automobiles (1997)

Score: +1

Keanu Reeves

as Taxi Racer in Planes, Trains, and Automobiles (1997)

Score: +3

Jeff Goldblum

as Neal Page in Planes, Trains, and Automobiles (1997)

Score: +1

John Goodman

as Del Griffith in Planes, Trains, and Automobiles (1997)

Score: +4

John Ritter

as Bruce Banner in The Avengers Quadrilogy (1982-1989)

Score: +4

Danny Elfman

as Composer in Sam Raimi's Stay Tuned (1992)

Score: +1

Earl Boen

as Murray Seidenbaum in Sam Raimi's Stay Tuned (1992)

Score: +1