Directed by Curt Mcdowell and written by zany, noted underground film-maker George Kuchar, THUNDERCRACK! is erotica at its most hilarious —and long-winded (two and one-half hours).

The most unique cult film of the 70s, and imbued with the spirit of sexual anarchy rife in that decades San Francisco, THUNDERCRACK! is an outrageous parody on "The Old Dark House" plot —i.e., a group of people forced to take refuge in a remote, creepy estate during a storm—THUNDERCRACK! features about half a dozen young people who are as uninhibited as they are attractive and get it on in various combinations (and positions).

An absolute must see for any and all fans of John Water-esque bad taste, and exploitation cult weirdness.

Sex is great fun in this film—which is absolutely, definitely not for prudes.

"THUNDERCRACK! is an awful sexpo spoof that suggests Russ Meyer trying to do a Tennesse Williams subject. Only viewers with highly developed camp sensibility will find amusement in the grotesque antics devised by scripter George Kuchar, who also plays the role of a man enamored of a gorilla."
- Daily Variety (1975)

"A lot of Thunder and a lot of Crack!"
- Fan comment (1995)

Come dressed like a mid-seventies San Fran Freak and we'll let you in cheap!!!