It's No Heaven (1988)

A follow-up to Scenes from a Marriage (1973); some thirty years after divorcing Johan, Marianne decides to visit her ex-husband at his summer home. She arrives in the middle of a family drama between Johan's son from another marriage and his granddaughter.

Research chemist Barnaby Fulton works on a fountain of youth pill for a chemical company. One of the labs chimps gets loose in the laboratory and mixes chemicals, but then pours the mix into the water cooler. When trying one of his own samples, washed down with water from the cooler, Fulton begins to act just like a twenty-year-old and believes his potion is working. Soon his wife and boss are also behaving like children.

As soon as Muffy St. John and her college friends arrive on her parents' secluded island, someone starts trimming the guest list... one murder at a time.

A group of kids discover one of the drums containing a rotting corpse and release the 2-4-5 Trioxin gas into the air, causing the dead to once again rise from the grave and seek out brains.

After inheriting the family mortuary, a pyrophobic mortician accidentally exposes hundreds of un-cremated bodies to toxic medical waste. As the corpses re-animate, the mortician's inheritance-seeking younger brother unexpectantly shows up, stumbling upon a full zombie outbreak!

A group of teenagers get into a car crash in the Texas woods on prom night, and then wander into an old farmhouse that is home to Leatherface and his insane family of cannibalistic psychopaths.

Upon waking from the dream of a theater peopled entirely by numerous Buster Keatons, a lowly stage hand causes havoc everywhere he works.

The Swamp Thing returns to battle the evil Dr. Arcane, who has a new science lab full of creatures transformed by genetic mutation, and chooses Heather Locklear as his new object of affection.

Antoine has always been fascinated by a hairdresser's delicate touch, the beguiling perfume, and the enticing figure of a woman with an opulent bosom. After all, he had always known he would marry one, completing his idealized love fantasy.

A free-spirited woman "kidnaps" a yuppie for a weekend of adventure. But the fun quickly takes a dangerous turn when her ex-con husband shows up.