Season 4, Episode 6: While a man talks to his mother, a topless woman in panties comes out of a bedroom. We see a brief flash of right breast before she turns and walks away down the hall. They watch her walk away.
Season 5, Episode 1: Topless woman. She and a man have sex under the covers and she moans loudly. After, he rolls off her and we see her breasts while they talk.
All seasons have sex scenes, some are implied, others are shown but they are all somewhat graphic.
Season 1: Somewhat graphic, partial nudity and some sex is implied.
A couple have sex, there is music playing in the background so we cant hear them. We see glimpses of their shoulders and legs but that's it. It is more romantic than explicit.
A man has sex with a hooker in his car. They are seen thrusting but we only see their faces; no nudity.
A couple have sex in bed but we only see their faces; no nudity.
A couple have sex on a desk. It is brief and there is no nudity.
A couple have sex but it is dark and they are clothed so we don't see anything; no nudity.
Season 2: Almost all the sex was implied this season. Not that graphic.
A man has sex in his car with a hooker, we only see their faces; no nudity.
Season 3: No graphic sex scenes; some sex is implied.
Includes more graphic sex and nudity.
A couple have sex but we only see their shoulders.
Sex between 4 characters is implied, in this scene a woman's breasts are exposed as well as another woman's buttocks.
A man is tortured via electric shock, naked. His buttocks are shown.
A couple talk in bed and the woman's breasts are exposed; sex is implied. In this episode, pictures of tortured men are shown; they are naked and rear and frontal nudity is shown.
Season 5: Graphic sex, some nudity.
A couple have sex in bed, its graphic. The woman's breasts are exposed.
A couple have sex in bed. The woman's side is exposed but her breasts and buttocks are out of focus.
A couple have sex on a desk, the man's buttocks are exposed as he thrusts into the woman. Later on in this episode a woman's breasts are exposed.