On-going in-joke feud with Sam Raimi.
Family issues, specifically family breakdown.
His characters often use elaborate booby traps, to capture the villain.
Often features strong female characters.
His unglamorous depictions of sadistic and realistically brutal killers.
His protagonists are often ordinary characters caught in extraordinary and Horrific circumstances.
Brutal and graphic depiction of violence.
Villains are often deformed and monstrous looking.
His horror films often contain important social issues (e.g. The Last House on the Left, The Hills Have Eyes).
Children in his films are often deformed or brutally murdered, often by the main villain.