The Godson (1971) - William Rotsler

Info from Something Weird Video:
The Godson ("The Motion Picture Everyone's Been Waiting For... Except the Syndicate!") is a sordid Godfather retread by the late, great WILLIAM ROTSLER. It's a tangled tale of murder, betrayal, seduction, and naked hysteria. Prepare to enter a world of mutton chops and pinkie rings.
JASON YUKON stars as Marco, a tough-as-nails enforcer working for "The Organization," and the godson of crime boss Leo Rocca. Hellbent with ambition, nothing will stop Marco from attaining power. He learns the business by working for mafioso Mr. Danielli, a "greasy jerk" in control of the underworld's prostitution. To Marco¹s disgust, Danielli is also a sadist who specializes in disciplining his stable of hookers. Marco is ordered to give the S&M treatment to Lark (porn star ORITA DE CHADWICK). After some titty-twisting, they get horizontal.

The Agony of Love (1966) - William Rotsler

A bored housewife rents an apartment where she indulges in all of her sexual fantasies.

Sounds almost like Bunuel's Belle De Jour before it was made from an erotica director. But, Radley Metzger remade Last Year At Marienbad so to speak in his The Lickerish Quartet.

Street of a Thousand Pleasures (1972) - William Rotsler

From the DVD Packaging:
As a reward for saving Sheik Abdul Ben Hassein from an assassin, American oil geologist John Dalton is taken to the spectacular STREET OF A THOUSAND PLEASURES, an amazing Mid-East slave market where potential buyers can feast their eyes on a veritable smorgasbord of feminine flesh! Everywhere you turn, everywhere you look, big beautiful bare buxotics are brazenly on display! Played by 71 of Hollywood’s Most Abundant Models — including the legendary Uschi Digart! — they’re all brought up-close and personal thanks to the Motion Picture Miracle of "Girl-A-Vision" which puts you in the picture! You become the eyes of the camera as it provides an amazing "hands-on" effect in which you are lovingly and literally submerged in skin! But watch out, that sinister assassin is still on the loose... Directed by William Rotsler (Mantis in Lace) under the moniker "Clay McCord" and released by Harry Novak (Please Don’t Eat My Mother!), STREET OF A THOUSAND PLEASURES is pure pulchritude paradise and about as far from Main Street USA as you can get without leaving the planet

Like It Is (1968) - William Rotsler

Description
This documentary on the “youth movement” of the late 1960s focuses on the hippie pot smoking/free love culture in the San Francisco Bay area.