Thundercrack! is a 1975 pornographic black comedy horror film written, edited, shot and directed by Curt McDowell, and written by George Kuchar based on a story by McDowell and Mark Ellinger. It stars Marion Eaton, Ken Scudder, Melinda McDowell and George Kuchar. Combining an "old dark house" mystery with hardcore sex scenes, Thundercrack! is more recently regarded as a cult film. It bears the influences of Jack Smith’s lush, DIY, camp aesthetic, and Nan Goldin’s glimpses of countercultural bohemia.

Plot

The story begins during a thunderstorm. The house, which is shown in the opening shot, named Prairie Blossom, is very clearly fake which lends itself to comedic value. A caller, Willene Cassidy (Maggie Pyle), pays a visit to the house owner, Mrs. Gert Hammond (Marion Eaton), who is very drunk. She insists that she make herself presentable before she answers the door. This takes a very long time and she makes a bad job of putting on her makeup. In an effort to get the alcohol out of her system she makes herself vomit by putting her fingers down her throat. Finally, having retrieved her wig from the toilet, where it fell during her vomiting, she is ready to greet her visitor. Willene is shocked at the dishevelled appearance of Mrs. Hammond and insist on giving her a bath. Willene explains that her husband is a very famous yet untalented country music star, Simon Cassidy, whose music is heard on the radio during the later scene. During the course of the bath, Willene unintentionally masturbates Mrs. Hammond. It is also revealed that Mr. Hammond died and that their son "no longer exists".