William Castle was the king of the gimmicky B-movie. The producer-director enticed audiences into lining up for low-budget horror movies like "House on Haunted Hill," "The Tingler," and "13 Ghosts" ...

The concept of a cult film is often a highly ambiguous one. After all, just about any kind of film can attain a following so passionate, niche, and hugely dedicated that it can be deemed cult-like.