No Filter: These Actors Were Really Getting Intimate On Film!
James Joyce’s Women (1985)

This film follows the life of James Joyce’s wife Nora. It also looks at some of the other real women in his life as well as some fictional women from the writer’s novels. Irish Author Fionnula Flanagan both wrote and starred in the film, as Nora and as several other characters. The film was directed by Michael Pearce.
In one scene Flanagan (as character Molly Bloom) pleasures herself in a bed for nearly 20 minutes and she’s completely nude during the act.