Acting

—		Hitter's anonymous as Brenda Swan
—		Battling Darkness as Self

2023		Landfill as Detective Karen Atwood
2023		Leap of Faith: William Friedkin on The Exorcist as Self (archive footage)
2023		The Exorcist: Believer as Regan MacNeil
2023		Spooktacular!

2020		Skin: A History of Nudity in the Movies as Self
2020		AGFA MYSTERY MIXTAPE #1 as Self

2018

as Helen Harris

2015

as Mrs. Lanfrey

2013

as Self (archive footage)

2011		Cousin Sarah
2011		Celebrity Nude Revue: Easy 80's Volume 1 as Self (archive footage)

2010		Found Footage Festival Volume 5: Live in Milwaukee as Herself (archive footage)
2010		The Exorcist Locations: Georgetown Then and Now as Self
2010		Raising Hell: Filming the Exorcist as Herself

2006		Teddy Scares as Rita Mortis (voice)
2006		The Powder Puff Principle as School Board President

2005		The Perfect Scary Movie as Self
2005		Rollerboogie III

2004

as Self

2003

as Shelly Stoker

1999

as Heather

1998		The Fear of God: 25 Years of The Exorcist as Self / Regan
1998		Mythos Hollywood - Das Geheimnis des Erfolgs as Self

1996		Scream as Obnoxious Reporter (uncredited)
1996		Prey of the Jaguar as Cody Johnson
1996		Didn't You Used to Be Satan?

1995

as Amelia Reynolds

1994		Double Blast as Claudia
1994		Gang Boys as Maggie Joiner

1992		Perry Mason: The Case of the Heartbroken Bride as Hannah Hawkes
1992		Calendar Girl, Cop, Killer? The Bambi Bembenek Story as Jane Mader
1992		Phone as Eve
1992		Dead Sleep as Maggie Healey

1991

as Leonie Stevens

1990		Repossessed as Nancy Aglet
1990		Nickelodeon Studios Opening Day Celebration!
1990		Zapped Again! as Miss Mitchell

1989		Bedroom Eyes II as Sophie Stevens
1989		Bail Out as Annette 'Nettie' Ridgeway
1989		Up Your Alley as Vickie Adderly
1989		Hollywood on Horses as Self
1989		How to Get Revenge as Herself/Host
1989		The Chilling as Mary Hampton

1988		Witchery as Jane Brooks
1988		Bad Blood as Evie Barnes
1988		Grotesque as Lisa
1988		Silent Assassins as Sara
1988		SFX Retaliator as Doris
1988		Moving Target as Sally Tyler

1987		The Heckling
1987		Nightforce as Carla

1985		Savage Island as Daly
1985		Red Heat as Christine Carlson

1984		Night Patrol as Officer Sue Perman
1984		Terror in the Aisles as Regan (archive footage) (uncredited)
1984		Savage Streets as Brenda

1983		Imps* as Jamie
1983		Chained Heat as Carol Henderson

1981		Hell Night as Marti Gaines
1981		Ruckus as Jenny Bellows

1979		Roller Boogie as Terry Barkley
1979		Stranger in Our House as Rachel Bryant
1979		Wild Horse Hank as Hank Bradford

1977		US Against the World as Self
1977		Exorcist II: The Heretic as Regan MacNeil

1976

as Chana Vilnofsky

1975		Sweet Hostage as Doris Mae Withers
1975		Sarah T. - Portrait of a Teenage Alcoholic as Sarah Travis

1974		Airport 1975 as Janice Abbott
1974		Born Innocent as Chris Parker

1973

as Regan MacNeil

1971

as Barby

1970

as Sara Aldridge

Production

1994

… Associate Producer

1988

… Associate Producer