Film 93: Witch House: The Legend of Petronel Haxley
I know you've never seen this one! Witch House is one of two films in the book which played theatrically but have never had a home format release (the other is The Eliminator). This played for one week at one cinema in 2008 and is now mired in a legal situation.
It's a shame because this tale of a 17th century witch exacting supernatural revenge on a group of young people is actually pretty good. Subtle, well-deployed scares, good acting and believable characters with credible reactions to the horrors they witness.