Harlem Candy is a funny little video that combines a moral with sex, and proves that some writers and directors can make features which run smoothly between the sex acts.
Henri Pachard spins a yarn about rival chocolate moguls (one black, the other white), who would sell their souls (or wives, or children) to the allegorical devil for a special blend of chocolate that makes consumers unbelievably horny. The sex which inevitably follows is so well done, that when the "kids" do it, I felt I was actually watching lovers and not perfunctory sex mechanics. And when the characters are sleazy, so is the sex.
Harlem Candy is completely interracial, but, in an unusual move, the color line is very clear. Both parents are bigots, and nothing will change them. But the moral is that today's children will be tomorrow's parents, and their world will be different. I recommend you watch Harlem Candy. It's got everything: lovemaking, great sleazy sex (three-way lesbians, double penetration), and plenty of couples appeal.