- Gestalt
2024 Executive Producer
- Queen of Rio
2018 Director
- Morbid Montage
2018 Priest
- America: Land of the Freeks
2018 Director
- Factory Cowboys: Working with Warhol
2018 Director
- Julia 17
2017 Mysterious Director
- Boogeyman: Reincarnation
2016 Director
- The Tender Wolf
2015
- Old Money
2015 Doktor
- Carcinoma
2014 Krankenpfleger
- Debris Documentar
2012 Himself
- Sunset Boulevard
2012 Director
- D.C. Sniper
2010 Director
- Melancholie der Engel
2009 Katze as Angel
- Absolute Evil
2009 Director
- Nightstalker
2009 Director
- Manson Family Cult
2009 Director
- Killing Marilyn
2009 Director
- Dungeon Girl
2008 Director
- Son Of Sam
2008 Director
- Baseline Killer
2008 Director
- Killer Nurse
2008 Director
- Curse of the Zodiac
2007 Director
- Diary of a Cannibal
2007 Director
- The Tomb
2007 Director
- Borderline Cult
2007 Director
- Black Dahlia
2006 Director
- The Raven
2006 Director
- Killer Pickton
2006 Director
- Zodiac Killer
2005 Director
- Green River Killer
2005 Director
- B.T.K. Killer
2005 Director
- Zombie Nation
2004 Director
- Daniel, the Wizard
2004 Director
- My Life is Magic
2004 Himself
- Boogeyman II: Redux
2003 Director
- Fassbinder in Hollywood
2002 Writer
- September Song
2001 Director
- Bloodsuckers
1997 Director
- Lethal Orbit
1996 Director
- Every Minute Is Goodbye
1996 Director
- Eva Braun: Her Life with Adolf Hitler
1996 Director
- Millenium Day
1995 Director
- Tornado Run
1995 Producer
- Star Witness
1995 Director
- Return of the Boogeyman
1994 Writer
- Off Season
1992 Professor Malini
- Sex Crimes
1992 Director
- The Big Sweat
1991 Director
- Warbirds
1989 Director
- Cold Heat
1989 Director
- Overkill
1987 Director
- Heaven and Earth
1987 Director
- I.F.O. (Identified Flying Object)
1987 Director
- Revenge of the Stolen Stars
1986 Director
- Strangers in Paradise
1984 Director
- Boogeyman II
1983 Director
- Olivia
1983 Director
- BrainWaves
1983 Director
- The Devonsville Terror
1983 Director
- Blank Generation
1980 Director
- The Boogey Man
1980 Director
- Cocaine Cowboys
1979 Director
- Ausgerechnet Bananen
1978 Director
- Chinese Roulette
1977 Kolbe
- This Is America
1977 Narrator (voice) (uncredited)
- Adolf and Marlene
1977 Director
- Shadow of Angels
1976 Der kleine Prinz
- Satan’s Brew
1976 Lauf
- The American Soldier
1976 Tony le Gitano
- With Music Elsewhere
1975 Writer
- A Second Spring
1975 Director
- Effi Briest
1974 Major Crampas
- Jodeln is ka Sünd
1974 Director
- Nora Helmer
1974 Krogstad
- Wachtmeister Rahn
1974 Director
- Tenderness of the Wolves
1973 Director
- World on a Wire
1973 Journalist Rupp
- The Italian Connection
1972 Tressoldi's Hallway Guard
- Bremen Freedom
1972 Miltenberger
- Eight Hours Don’t Make a Day
1972 Peter
- Whity
1971 Producer
- Pioneers in Ingolstadt
1971 Zeck
- Rio das Mortes
1971 Autohändler
- The Ancestress
1971 der Ahnherr
- Haytabo
1971 Director
- Beware of a Holy Whore
1971 Korbinian
- Love Is Colder Than Death
1970 Bruno
- Zwei ganze Tage
1970 Er
- Auktion bei Gwendoline
1970 Guy Partridge
- Scene of the Crime
1970 Elmar Holz
- Otto, der Klavierstimmer
1970 Eberhard
- Your Caresses
1969 Stefan
- Detective
1969 Sebastian West
- Tonys Freunde
1969 Manuel
- Der Auswanderer
1967 Tutino
- Enter Inspector Maigret
1966 René Delfosse
- Jan Himp und die kleine Brise
1966 Jan Himp
- Jugendprozeß
1966 Walter
- Nächstes Jahr in Jerusalem
1965 Ronnie Kahn
- Fanny Hill
1964 Charles
- Legende einer Liebe
1964 Rodrigo
- And So to Bed
1963 Schulkamerad
- Das Kriminalmuseum
1963 Jochen Benning
- Only a Woman
1962
- Der Marquis von Keith
1962 Hermann Casimir
