Grand Guignol
Theatrical form

the name of a former theater in Paris noted for such drama; any dramatic production designed to shock and horrify its audience with its gruesome or macabre content (from Webster's New World Dictionary)
 

WWW Links:
An Evening at the Grand Guignol
The Straight Dope: Grand Guignol
Russell Blackwood: "The Gore and Glory of Grand Guignol"