Opera (1987)

Directed by Dario Argento.

IMDB

Satan's Sadists (1969)

Directed by Al Adamson.

IMDB

Shock Waves (1977)

Directed by Ken Wiederhorn.

The Last American Virgin (1982)

Directed by Boaz Davidson.

Pick-Up Summer (aka Pinball Summer) (1980)

Directed by George Mihalka.

Rabid (1977)

Directed by David Cronenberg. Starring Marilyn Chambers.

IMDB

Frankenhooker (1990)

Directed by Frank Henenlotter.